Illaoi

TopADmeleefrontlineteamfightdivesplitpushlane-bully

Base stats & abilities ↓

Data11 pro games·Mar 2023 – Oct 2026·patches 13.4–26.20·LCK, LJL, LPL, VCS, Worlds· incl. international·Browse source →

Comp identity — Top

Leans Split — its strongest of the five comp axes.

Plays like — nearest pentagon

Ranked by how close their five-axis heatmap looks — role-agnostic.

Where it thrives (5-comp fit)

Splitnatural · 80%
Attackworkable · 30%
Siegeworkable · 30%
Illaoi grinds down the sidelane through raw durability and drags the map apart. Enough Attack and Siege sits in the kit to fight front-to-back when the enemy forces it. Passive spawns tentacles that both deal physical damage and heal Illaoi for a chunk of missing HP whenever they hit an enemy champion.

Kit quirks

Passive spawns tentacles that both deal physical damage and heal Illaoi for a chunk of missing HP whenever they hit an enemy champion
E Test of Spirit tethers a target's spirit, redirecting 25-45% (+8% per 100 AD) of damage dealt to it back onto the real target, and breaking the tether slows them 80% and marks them a Vessel for extra tentacle spawns
R Leap of Faith grants unstoppable (CC-immune) during the leap and can spawn up to 6 tentacles at once off a teamfight landing

How Illaoi performs in pro play · patch 26.20

Pro strength

Top49% WR · 0% ban · 0.5 games

Strongest duos

Not enough paired games yet.

Best matchups

No favored matchups recorded.

Hardest matchups

No losing matchups recorded.

Win rate by patch & league

Raw pick win rate from our pro-game record, newest patches first. Each cell is win% with its game count beside it; faded cells are small samples (under 3 games) and are noisy.

Patch	LCK	LPL	LCP	Other	All
26.20	0%2	—	—	—	0%2
26.10	100%1	—	—	0%1	50%2
26.08	100%1	—	—	—	100%1
14.12	—	—	0%1	—	0%1
14.3	100%1	—	50%2	—	67%3
13.4	0%1	0%1	—	—	0%2

Champion reference

Base stats and every ability with its per-rank values and ratios. Search all champions →

Illaoi — The Kraken Priestess

Class: Juggernaut
Resource: Mana
Range type: Melee
Adaptive type: Physical
Positions: Top
Released: 2015-11-24 (V5.23)
Last changed: V26.04
Price: 1,575 BE · 790 RP

Damage

Toughness

Control

Mobility

Utility

Difficulty

Base stats

Stat	Base	Per level	Level 18
Health	656	+115	2611
Health regen (per 5s)	9.5	+0.8	23.1
Mana	350	+50	1200
Mana regen (per 5s)	7.5	+0.75	20.25
Armor	35	+5	120
Magic resist	32	+2.05	66.85
Attack damage	65	+5	150
Attack speed	0.625	+2.5%	0.891
Attack speed ratio	0.625
Attack range	125
Movement speed	350

Level 18 uses League's growth curve (base + 17 × per-level); attack speed grows as bonus % scaled by the attack speed ratio.

Advanced stats & game-mode balance

Acquisition radius: 600
Selection height: 100
Selection radius: 100
Pathing radius: 35
Attack cast time (s): 0.375
Attack total time (s): 1.75

ARAM: damage dealt ×0.95 · damage taken ×1.05 · healing ×0.8

Arena: health per level -10 · AD per level -1

One for All: damage dealt ×0.92 · damage taken ×1.05

URF: damage dealt ×1 · damage taken ×0.9

Abilities

Passive

Prophet of an Elder God

Static cooldown: 18 – 7 (based on level)Effect radius: 1000

Innate: Periodically, Illaoi spawns a Tentacle on the nearest terrain, if no other Tentacle is around it. Tentacles fully spawn after a 2 second delay and are untargetable in the meantime.

Tentacles are commanded to attack by Illaoi's abilities, dealing 9 – 180 (based on level) (+ 110% AD) (+ 40% AP) physical damage to all enemies struck, increased by 0% – 30% (based on Tentacle Smash's rank). Each enemy individually reduces the slam damage by 50% for every slam they were hit by in the last 0.66 seconds, capped at 75% less damage.

Each Tentacle also heals Illaoi for 5% of her missing health if it hits at least one enemy champion.

See Pets for more details about Tentacles.

Targeting input: PassiveAffects: EnemiesDamage type: Area damageDamage sub-types: PhysicalSpell shield: BlockedProjectile: Not Blocked

Notes (8)

Illaoi cannot spawn Tentacles on ally invulnerable structures [1] (note), in addition to neither her nor the Vessel being able to spawn them in Nexus Obelisk's attack range.
When the inhibitor is down, Nexus turrets will only have a single hardcoded valid space on each of their external sides to spawn Tentacles on. [2] (note)
Tentacles are prevented from spawning on base gates.
If multiple Tentacles hit simultaneously, the received healing is calculated iteratively based on the new amount of missing health, as per this formula: (maximum health − current health) × (1 − 0.95n), with 'n' the number of Tentacle hits.
Because the healing is calculated iteratively, Grievous Wounds ends up slightly less effective than its nominal value, since the reduced healing leaves more missing health on each subsequent Tentacle hit.
A slam that extends the damage reduction window to reduce the damage of a successive slam that would otherwise not have been reduced, can have its contribution of damage effectivelly negated or even outweighted by the window extension. For example, a slam reduced to 25% damage may be the cause of a successive slam being reduced from 100% to 50% damage - reducing the damage by 50% with only a contribution of 25%. [3] [4] (unexpected)
The expectation would instead be for slam damage to follow the formula (200% − damage% of slams in the last 0.66s) ÷ 2, which would result in the successive slam from the above example to be reduced from 100% to 87.5% damage - reducing the damage by 12.5% with a contribution of 25%.
The healing applies after omnivamp.

Map-specific differences (2)

Heal health ratio changed to 2.5% missing health.
Illaoi has a 1200 radius to detect a nearby terrain to spawn a Tentacle on [5]. On Summoner's Rift, every point on the map has a terrain that is within that radius, thus effectively allowing Illaoi to spawn a Tentacle from anywhere. The same may not apply for all maps.

Tentacle Smash

Cost: 40 / 45 / 50 / 55 / 60 ManaCooldown: 10 / 9 / 8 / 7 / 6Cast time: 0.75Range: -52.75 • 802.75Width: 200Queue threshold: 0.5

Passive: Tentacle damage is increased.

Damage Increase: 10 / 15 / 20 / 25 / 30%

Active: Illaoi slams down a Tentacle in the target direction.

Illaoi reveals herself during the cast if there is an enemy champion nearby.

Targeting input: LocationTarget out-of-range override: Target at maximum range (clamped)Affects: EnemiesDamage type: Area damageDamage sub-types: PhysicalSpell shield: BlockedProjectile: Not Blocked

Notes (5)

This ability will cast from wherever the caster is at the end of the cast time.
Tentacle Smash's hitbox is fixed in front of Illaoi, while the indicator on the ground is fixed to the targeted direction.
For allied Original Illaoi and Void Bringer Illaoi skin, Tentacle Smash's indicator is further in front of Illaoi compared to an enemy Illaoi's and other skins (with the hitbox unchanged). [6] (unexpected)
PENDING FOR TEST: The self-reveal has not been fully tested for complete confirmation. Is the ability invisible when hitting minions and there is no enemy champion nearby? Is the tip of the ability enough to reveal her? Whether it can hit a minion or not? Just if she's around the exit of the fog of war, and even if she points towards the inside of the fog of war? [7]
Death, unless protected by Resurrection

Tips & tricks (1)

Since Tentacle Smash is still considered a Tentacle for Prophet of an Elder God's damage reduction, care should be taken around Tentacle attack sequences, as using the ability at innapropriate times may greatly reduce not only its own damage, but also the damage of following Tentacle attacks. [8]

Map-specific differences (1)

Bonus tentacle damage changed to 10 / 15 / 20 / 25 / 30%.

Harsh Lesson

Cost: 30 ManaCooldown: 4Cast time: noneQueue threshold: 0.5

Active: Illaoi empowers her next basic attack within 6 seconds to have an uncancellable windup, gain 225 bonus range and cause her to leap to the target's location if they are beyond her normal basic attack range.

The attack deals additional physical damage, with a minimum threshold, and capped at 300 against non-champions, and commands all Tentacles in range to attack the target. The minimum additional damage can also be applied against turrets.

Additional Physical Damage: 3 / 3.5 / 4 / 4.5 / 5% (+ 3.5% per 100 AD) of target's maximum health
Minimum Physical Damage: 20 / 30 / 40 / 50 / 60

Harsh Lesson resets Illaoi's basic attack timer. Harsh Lesson can be activated during Illaoi's other abilities. If the leap is interrupted, the ability is cancelled and put on cooldown.

Targeting input: AutoAffects: SelfDamage type: See NotesDamage sub-types: PhysicalSpell shield: See NotesParries: See NotesGrounded: See NotesKnockdown: See Notes

Notes (39)

The damage of Harsh Lesson's attack portion is tagged as basic damage and spell damage, while the additional damage is only tagged as spell damage.
This causes it to potentially trigger spell effects twice, as seen by pre-V26.09 Arcane Comet double cooldown reduction. [9] (unexpected)
The additional damage doesn't apply life steal but it does apply spell vamp and Omnivamp.
Harsh Lesson cannot be cast while pulling a Spirit.
Harsh Lesson is made of two different abilities which are decided by Illaoi's range to the target, being either melee or within dash range, causing interactions to act differently.
Interrupt:
The melee attack has an uncancellable windup.
Starting the attack before triggering Guardian Angel's passive and hitting while she's in it will not cause the Tentacles to slam. [10]
The dash attack does not have an uncancellable windup, meaning effects that can interrupt the dash will cancel the attack.
Unlike other empowered basic attacks, an interrupt on the dash attack will still cause the buff to be consumed and the ability to be put on cooldown. [11]
That includes self effects, such as Flash. [12] (unexpected)
Based on other effects, the expectation would be to either have: flash interrupts the dash but does not negate the effect (i.e Udyr's Blazing Stampede, Hecarim's Devastating Charge); flash is disabled (i.e Volibear's Thundering Smash, Rell's Ferromancy: Mount Up); flash interrupts the dash and the effect, but the effect remains castable in melee range (i.e Rengar's Unseen Predator Savagery).
Ground:
The ability can be cast, but only the melee attack can be used.
Exiting grounding after having already cast the ability, will cause the dash to hit at extremely high speed. [13] [14] (unexpected)
Root:
The ability can be cast, but only the melee attack can be used.
If Illaoi attack commands and then casts Harsh Lesson while rooted, or if she issues at any point an "Attack Move" command near the target, she is able to use the close range version within its dash range. [15] (unexpected)
Spell shield:
The melee attack does not pop the spell shield. (unexpected)
The dash attack pops the spell shield, preventing Tentacle commands but not preventing the additional damage. [16]
Block, dodge and blind:
Tentacles will slam if the melee attack is blocked [17], but will not if it's dodged [18] or if it misses [19]. (unexpected)
In all cases the empowered attack additional damage is prevented. (unexpected)
Tentacles will slam if the dash attack is blocked, dodged or if it misses.
The empowered attack additional damage is dealt when the attack is blocked or dodged, but is not if it misses.
The melee attack will still hit if the target becomes untargetable [20], while the dash attack will not. [21] (unexpected)
Tentacles will slam whether the melee or dash attack kills the target. However, for the melee attack the slam will be offset from the target. [22] [23] (unexpected)
The melee attack will not hit if the target has already died, while the dash attack will hit. [24]
In a frame perfect situation, the melee attack will also hit, however it will not make the Tentacles slam. [25] [26] (unexpected)
The melee attack triggers Tentacle slams when hitting a structure, while the dash attack does not. [27] (unexpected)
If Illaoi has an active spell shield, the melee attack will not trigger Tentacle slams, while the dash attack will do. [28] (unexpected)
The melee attack triggers Hail of Blades, while the dash attack does not. [29] (unexpected)
If the empowered attack duration ends during the melee animation, the attack won't be empowered (unexpected), but if it ends during the dash - then the buff will linger until the attack has finished. [30]
Illaoi can quickly cast other abilities after melee hitting the target, but after dash hitting there is a short delay. [31] (unexpected)
Abilities cannot be buffered during the melee windup but they can be buffered during the dash windup. (unexpected)
The dash is formed of two parts: one, the attack animation which upon completion triggers on-attack effects; two, the dash itself which upon completion deals the attack's damage and triggers on-hit effects.
Gaining attack speed will improve the first, but will not improve the second, causing a desync with the animation ending sooner and on-attack effects triggering sooner. [32] [33] [34] (unexpected)
The Tentacle attacking because of Harsh Lesson is considered to be of the same cast instance as the basic attack, and for example will not grant additional stacks of Conqueror and Electrocute.

Tips & tricks (1)

Since the mana of an ability is consumed at the end of cast time, Illaoi may still cast Harsh Lesson mid cast time of her other abilities even if her remaining mana were only enough for that other ability - potentially casting both for the price of one.

Map-specific differences (1)

Cooldown changed to 6 seconds.

Test of Spirit

Cost: 35 / 40 / 45 / 50 / 55 ManaCooldown: 16 / 15 / 14 / 13 / 12Cast time: 0.25Range: 950 • 100Width: 100Tether radius: 1500 • 1700Speed: 1900Queue threshold: 0.5

Active: Illaoi launches a tendril in the target direction that stops at the first enemy hit, pulling their Spirit out in front of Illaoi over 0.75 seconds if they are a champion. The target is tethered to the Spirit for 7 seconds, revealing them in addition to granting sight of the area around them while the tether remains.

The Spirit spawns with the target's current health, armor and magic resist, and echoes a portion of the pre-mitigation damage received to the tethered champion, with the last hits before it dies potentially echoing reduced damage.

Damage Transmission: 25 / 30 / 35 / 40 / 45% (+ 8% per 100 AD)

When the Spirit is killed or the target leaves tether range, the tether is severed, marking the target as a Vessel for 4 seconds and slowing them by 80% for 1.5 seconds once the tether returns back to them. Each Tentacle autonomously attacks the closest Vessel or Spirit, prioritizing the latter, once every 4.5 / 4 / 3.5 (based on level) seconds.

Enemies made a Vessel continuously spawn a Tentacle near themselves, when possible. Tentacles can spawn 300 units closer to each other than when spawned by Illaoi.

Illaoi is unable to act while firing the projectile and while the target's Spirit is being pulled. She also reveals herself while firing the projectile if there is an enemy champion nearby. Vessels can dispel their mark by scoring a takedown against Illaoi. Test of Spirit cannot be cast again until the Spirit dies.

Targeting input: LocationTarget out-of-range override: Target at maximum range (clamped)Affects: EnemiesDamage sub-types: Physical • Magic • True, (Echoed damage)Spell shield: See NotesProjectile: See Notes

Notes (58)

PENDING FOR TEST: The self-reveal has not been fully tested for complete confirmation. Is the ability invisible when passing nearby minions and there is no enemy champion nearby? Is the tip of the ability enough to reveal her? Whether it can collide with a minion or not? Just if she's around the exit of the fog of war, and even if she points towards the inside of the fog of war? [35]
This ability will cast from wherever the caster is at the end of the cast time.
And will fire towards the same pointed location.
The projectile tentacle model is linked to Illaoi's model animation and size. However gameplay wise it is not, thus the actual hitbox being different than the position, width and length of the visible model. [36] (unexpected)
The model will stop mid-air / vanish if Illaoi goes into stasis, sleep or airborne, however the actual hitbox will continue its trajectory unseen. [37]
The tendril is destroyed if Illaoi dies before it hits a target. However, if it has already hit a target, then the Spirit pull will continue even if Illaoi has already died.
The tendril can be blocked by projectile-destroying effects (e.g. Yasuo's Wind Wall) and spell shields.
The spirit pull is not considered a crowd control effect and will not be blocked by crowd control immunity, with the exception of Morgana's Black Shield. [38] (unexpected)
Sion's Spirit cannot be spawned during Glory in Death. Spirits created before Sion's zombie state will remain active.
Spirits are classified as clones:
The Spirit spawns with the tethered champion's default model and size. [39]
Spirits can only be fully targeted by Illaoi's team and neutral monsters. The Spirit's allies cannot manually select it as a valid target for spells and abilities, but they can still do so with automatically targeted effects.
Spirits take 50% damage from turrets. [40] (unexpected)
Effects, like runes, may consider the Spirit as a champion for their stat-tracking. (unexpected)
Spirits cannot be healed nor shielded ( Summon Aery excluded).
Effects that are copied from the clone's caster to the clone, will also be copied from Illaoi to the Spirit (e.g Celestial Opposition). [41] (unexpected)
The Spirit levels up when the Vessel does, gaining the target's stats per level. If the target has a resource that also increases per level (i.e mana), the Spirit's lifetime will also visually increase, but not mechanically. [42] (unexpected)
Like other clones, killing the Spirit awards 25, but unlike other clones it doesn't award Experience. (note)
The Spirit is untargetable while it is being pulled.
The Spirit's lifetime is sometimes 0.25 seconds longer, while its untargetability is sometimes shorter, potentially causing Tentacles to hit an inconsistent amount of times, as was easily the case pre V25.15. [43] (unexpected)
The Spirit's destination is decided based on Illaoi's position and facing direction when the target is hit.
If the Spirit has no valid space to move to, it will get stuck and stay untargetable until its lifetime runs out. [44] [45] [46] [47] (unexpected)
The Spirit will sometimes desync its visual position from its gameplay one. [48] (unexpected)
If the target's health is reduced to 0 while their Spirit is being pulled out, and they do not die (i.e because of resurrection), then the Spirit will still spawn with 0 health, making it invulnerable. The target will successively become a Vessel when the Spirit's lifetime expires. [49] (unexpected)
If some effect regenerates the champion's health while they are resurrecting, and before the Spirit spawns, then the same will not apply. [50] [51]
Grabbing the Spirit of Viego will make the Spirit's lifetime (the white bar below the lifebar) disappear, similar to other cases in the past. [52] (unexpected)
PENDING FOR TEST: Post V12.8, does grabbing the Spirit of an Oathsworn make the Spirit invisible? [53]
The Spirit is immune to stasis (i.e. Bard's Tempered Fate).
Echoed damage is calculated by taking the pre-mitigation damage against the Spirit, applying Test of Spirit's damage modifier, and then capping it to the Spirit's current health. This damage will then be affected by damage modifiers (resistances and other effects) of the Vessel.
This order of operations allows Test of Spirit to deal more or less percentage of the Vessel's health than would be expected:
Because the Spirit's modifiers can be different from the Vessel's, allowing the Spirit to have higher or lower effective health, respectively increasing or decreasing the maximum pre-mitigated damage from killing it.
Because, while it would be expected to block excess pre-mitigated damage over what kills the Spirit, since the cap does not consider the Spirit's damage modifier, it may cause it to block damage before the Spirit is killed [54], or in corner cases not block excess damage even if it is killed. On the other hand, Test of Spirit's damage modifier is unexpectedly applied before the cap instead of after, with the same effect of potentially causing the cap to not block excess damage even if the Spirit is killed, or in corner cases block damage before it is killed.
The addition of the two, causes an increasing difference of expected damage when the pre-mitigated damage is between Spirit current health ÷ Spiritmod and Spirit current health ÷ Emod. (unexpected)
Illaoi needs 937.5 / 875 / 812.5 / 750 / 687.5 total AD to reach 100% echoed damage. As per above, the damage is still dependent on the Spirit's and Vessel's damage modifiers and may not always be able to deal 100% of the target's current health as total echoed damage.
Transferred damage will apply on-damage effects, such as damage amplifiers (e.g Last Stand), Black Cleaver, Morellonomicon, Executioner's Calling, Elixir of Sorcery, Sudden Impact, Shadowflame, The Collector, First Strike, Aspect of the Dragon burn damage, and The Darkin Scythe.
Echoed damage always counts as single target for the purpose of Omnivamp.
Echoed damage always counts as proc damage and thus will not doubly apply on-hit or on-spell effects versus the target (e.g. Liandry's Torment). These effects are only applied versus the Spirit.
Some effects like Sudden Impact are consumed by the target first, before the Spirit. Other effects like Hextech Alternator are consumed by the Spirit first, before the target.
Attacking the Vessel and its Spirit simultaneously will only apply one stack of Black Cleaver to the Vessel.
Pre-applied effects (e.g First Strike, Elixir of Sorcery, Bastionbreaker, Eclipse, Hextech Alternator, Scout's Slingshot, Fiora's Duelist's Dance, Leona's Sunlight, Qiyana's Royal Privilege and Terrashape, Renata's Leverage, Zoe's Sleepy Trouble Bubble, etc...), excluding pre-applied on-hit ones (e.g Sheen, Heartsteel), will cause the echoed damage to always deal double the proc damage, overwriting the source damage, potentially echoing much less or more damage than expected. [55] [56] (unexpected)
Since the actual tether range uses a different calculation from the indicator, it may often appear that the tether breaks before reaching the indicator. [57] [58] (unexpected)
When the tether is broken (whether the Spirit's lifetime ran out or the target moved out of range), the Spirit will vanish and move to Illaoi's location.
An uncancellable windup attack may still kill the Spirit after it vanished to grant the gold, but without making the target a Vessel and without echoing damage. [59]
When the Spirit is killed, it will remain in the same position for less than a second before moving to an unknown location. This will cancel any remaining Tentacle queued attacks, for the target being out of range. [60] [61] [62] (unexpected)
If the target that had its Spirit pulled from them is taken into the Realm of Death, the tether will break, but they will not be made into a Vessel.
Fiora's Riposte can be used to prevent becoming a Vessel if used before the Spirit is killed [63], or while leaving the tether's range. [64]
If the target is made a Vessel while resurrecting, some resurrections may cleanse the Vessel debuff, while others will not. [65] [66] (unexpected)
Spell shields can also prevent the slow upon becoming a Vessel. Spell shields will not prevent becoming a Vessel or Tentacles from attacking.
The application of the slowing missile cannot be blocked by projectile- destroying effects (e.g. Yasuo's Wind Wall).
Effects that destroy homing missiles (i.e certain untargetabilities) will prevent the application of the slowing missile.
The slowing missile will not be fired if the target is already untargetable when the Spirit dies.
Illaoi can better see than her allies who's been Vesseled, by adding a layer of watery effects on their model. The Vessel will also be let known it's debuffed, by having a layer of watery effects on its screen instead.
If the target becomes a Vessel while vanished, the layer on their model will fail to be added. [67] (unexpected)
The Vessel status effect is a debuff that doesn't persist through death.
If the Vessel debuff expires on the same server tick as the Tentacle becomes ready to slam, whether the slam occurs depends on which of the two spawned first. This is expected to be the Vessel, so no slam occurs.
The slam will occur on clones created after the Tentacle already spawned.
The following table refers for interactions while Illaoi is firing the projectile and while the target's Spirit is being pulled:
Death

Tips & tricks (2)

Other than area of effects, since damage amplifiers (e.g Last Stand), Aspect of the Dragon burn damage, and The Darkin Scythe apply on the Spirit and the Vessel individually and as separate instances of damage, their bonus damage through the echo is effectively enhanced. In particular, damage amplifiers and The Darkin Scyte will further apply on their own echoed bonus damage. [68]
The same does not apply for effects that apply post-mitigation (e.g Abyssal Mask, Bloodsong).

Map-specific differences (1)

Bonus gold earned from killing Spirits is ignored by the Swiftplay-specific bounty comeback system.

Test of Spirit

Cost: 35 / 40 / 45 / 50 / 55 ManaCooldown: 16 / 15 / 14 / 13 / 12Cast time: 0.25Range: 950 • 100Width: 100Tether radius: 1500 • 1700Speed: 1900Queue threshold: 0.5

Damage Transmission: 25 / 30 / 35 / 40 / 45% (+ 8% per 100 AD)

Enemies made a Vessel continuously spawn a Tentacle near themselves, when possible. Tentacles can spawn 300 units closer to each other than when spawned by Illaoi.

Notes (58)

PENDING FOR TEST: The self-reveal has not been fully tested for complete confirmation. Is the ability invisible when passing nearby minions and there is no enemy champion nearby? Is the tip of the ability enough to reveal her? Whether it can collide with a minion or not? Just if she's around the exit of the fog of war, and even if she points towards the inside of the fog of war? [69]
This ability will cast from wherever the caster is at the end of the cast time.
And will fire towards the same pointed location.
The projectile tentacle model is linked to Illaoi's model animation and size. However gameplay wise it is not, thus the actual hitbox being different than the position, width and length of the visible model. [70] (unexpected)
The model will stop mid-air / vanish if Illaoi goes into stasis, sleep or airborne, however the actual hitbox will continue its trajectory unseen. [71]
The tendril is destroyed if Illaoi dies before it hits a target. However, if it has already hit a target, then the Spirit pull will continue even if Illaoi has already died.
The tendril can be blocked by projectile-destroying effects (e.g. Yasuo's Wind Wall) and spell shields.
The spirit pull is not considered a crowd control effect and will not be blocked by crowd control immunity, with the exception of Morgana's Black Shield. [72] (unexpected)
Sion's Spirit cannot be spawned during Glory in Death. Spirits created before Sion's zombie state will remain active.
Spirits are classified as clones:
The Spirit spawns with the tethered champion's default model and size. [73]
Spirits can only be fully targeted by Illaoi's team and neutral monsters. The Spirit's allies cannot manually select it as a valid target for spells and abilities, but they can still do so with automatically targeted effects.
Spirits take 50% damage from turrets. [74] (unexpected)
Effects, like runes, may consider the Spirit as a champion for their stat-tracking. (unexpected)
Spirits cannot be healed nor shielded ( Summon Aery excluded).
Effects that are copied from the clone's caster to the clone, will also be copied from Illaoi to the Spirit (e.g Celestial Opposition). [75] (unexpected)
The Spirit levels up when the Vessel does, gaining the target's stats per level. If the target has a resource that also increases per level (i.e mana), the Spirit's lifetime will also visually increase, but not mechanically. [76] (unexpected)
Like other clones, killing the Spirit awards 25, but unlike other clones it doesn't award Experience. (note)
The Spirit is untargetable while it is being pulled.
The Spirit's lifetime is sometimes 0.25 seconds longer, while its untargetability is sometimes shorter, potentially causing Tentacles to hit an inconsistent amount of times, as was easily the case pre V25.15. [77] (unexpected)
The Spirit's destination is decided based on Illaoi's position and facing direction when the target is hit.
If the Spirit has no valid space to move to, it will get stuck and stay untargetable until its lifetime runs out. [78] [79] [80] [81] (unexpected)
The Spirit will sometimes desync its visual position from its gameplay one. [82] (unexpected)
If the target's health is reduced to 0 while their Spirit is being pulled out, and they do not die (i.e because of resurrection), then the Spirit will still spawn with 0 health, making it invulnerable. The target will successively become a Vessel when the Spirit's lifetime expires. [83] (unexpected)
If some effect regenerates the champion's health while they are resurrecting, and before the Spirit spawns, then the same will not apply. [84] [85]
Grabbing the Spirit of Viego will make the Spirit's lifetime (the white bar below the lifebar) disappear, similar to other cases in the past. [86] (unexpected)
PENDING FOR TEST: Post V12.8, does grabbing the Spirit of an Oathsworn make the Spirit invisible? [87]
The Spirit is immune to stasis (i.e. Bard's Tempered Fate).
Echoed damage is calculated by taking the pre-mitigation damage against the Spirit, applying Test of Spirit's damage modifier, and then capping it to the Spirit's current health. This damage will then be affected by damage modifiers (resistances and other effects) of the Vessel.
This order of operations allows Test of Spirit to deal more or less percentage of the Vessel's health than would be expected:
Because the Spirit's modifiers can be different from the Vessel's, allowing the Spirit to have higher or lower effective health, respectively increasing or decreasing the maximum pre-mitigated damage from killing it.
Because, while it would be expected to block excess pre-mitigated damage over what kills the Spirit, since the cap does not consider the Spirit's damage modifier, it may cause it to block damage before the Spirit is killed [88], or in corner cases not block excess damage even if it is killed. On the other hand, Test of Spirit's damage modifier is unexpectedly applied before the cap instead of after, with the same effect of potentially causing the cap to not block excess damage even if the Spirit is killed, or in corner cases block damage before it is killed.
The addition of the two, causes an increasing difference of expected damage when the pre-mitigated damage is between Spirit current health ÷ Spiritmod and Spirit current health ÷ Emod. (unexpected)
Illaoi needs 937.5 / 875 / 812.5 / 750 / 687.5 total AD to reach 100% echoed damage. As per above, the damage is still dependent on the Spirit's and Vessel's damage modifiers and may not always be able to deal 100% of the target's current health as total echoed damage.
Transferred damage will apply on-damage effects, such as damage amplifiers (e.g Last Stand), Black Cleaver, Morellonomicon, Executioner's Calling, Elixir of Sorcery, Sudden Impact, Shadowflame, The Collector, First Strike, Aspect of the Dragon burn damage, and The Darkin Scythe.
Echoed damage always counts as single target for the purpose of Omnivamp.
Echoed damage always counts as proc damage and thus will not doubly apply on-hit or on-spell effects versus the target (e.g. Liandry's Torment). These effects are only applied versus the Spirit.
Some effects like Sudden Impact are consumed by the target first, before the Spirit. Other effects like Hextech Alternator are consumed by the Spirit first, before the target.
Attacking the Vessel and its Spirit simultaneously will only apply one stack of Black Cleaver to the Vessel.
Pre-applied effects (e.g First Strike, Elixir of Sorcery, Bastionbreaker, Eclipse, Hextech Alternator, Scout's Slingshot, Fiora's Duelist's Dance, Leona's Sunlight, Qiyana's Royal Privilege and Terrashape, Renata's Leverage, Zoe's Sleepy Trouble Bubble, etc...), excluding pre-applied on-hit ones (e.g Sheen, Heartsteel), will cause the echoed damage to always deal double the proc damage, overwriting the source damage, potentially echoing much less or more damage than expected. [89] [90] (unexpected)
Since the actual tether range uses a different calculation from the indicator, it may often appear that the tether breaks before reaching the indicator. [91] [92] (unexpected)
When the tether is broken (whether the Spirit's lifetime ran out or the target moved out of range), the Spirit will vanish and move to Illaoi's location.
An uncancellable windup attack may still kill the Spirit after it vanished to grant the gold, but without making the target a Vessel and without echoing damage. [93]
When the Spirit is killed, it will remain in the same position for less than a second before moving to an unknown location. This will cancel any remaining Tentacle queued attacks, for the target being out of range. [94] [95] [96] (unexpected)
If the target that had its Spirit pulled from them is taken into the Realm of Death, the tether will break, but they will not be made into a Vessel.
Fiora's Riposte can be used to prevent becoming a Vessel if used before the Spirit is killed [97], or while leaving the tether's range. [98]
If the target is made a Vessel while resurrecting, some resurrections may cleanse the Vessel debuff, while others will not. [99] [100] (unexpected)
Spell shields can also prevent the slow upon becoming a Vessel. Spell shields will not prevent becoming a Vessel or Tentacles from attacking.
The application of the slowing missile cannot be blocked by projectile- destroying effects (e.g. Yasuo's Wind Wall).
Effects that destroy homing missiles (i.e certain untargetabilities) will prevent the application of the slowing missile.
The slowing missile will not be fired if the target is already untargetable when the Spirit dies.
Illaoi can better see than her allies who's been Vesseled, by adding a layer of watery effects on their model. The Vessel will also be let known it's debuffed, by having a layer of watery effects on its screen instead.
If the target becomes a Vessel while vanished, the layer on their model will fail to be added. [101] (unexpected)
The Vessel status effect is a debuff that doesn't persist through death.
If the Vessel debuff expires on the same server tick as the Tentacle becomes ready to slam, whether the slam occurs depends on which of the two spawned first. This is expected to be the Vessel, so no slam occurs.
The slam will occur on clones created after the Tentacle already spawned.
The following table refers for interactions while Illaoi is firing the projectile and while the target's Spirit is being pulled:
Death

Tips & tricks (2)

Other than area of effects, since damage amplifiers (e.g Last Stand), Aspect of the Dragon burn damage, and The Darkin Scythe apply on the Spirit and the Vessel individually and as separate instances of damage, their bonus damage through the echo is effectively enhanced. In particular, damage amplifiers and The Darkin Scyte will further apply on their own echoed bonus damage. [102]
The same does not apply for effects that apply post-mitigation (e.g Abyssal Mask, Bloodsong).

Map-specific differences (1)

Bonus gold earned from killing Spirits is ignored by the Swiftplay-specific bounty comeback system.

Leap of Faith

Cost: 100 ManaCooldown: 120 / 95 / 70Cast time: 0.5Effect radius: 500Queue threshold: 0.5

Active: Illaoi gains displacement immunity and leaps into the air for the cast time. She then slams her idol into the ground, dealing physical damage to nearby enemies. For each enemy champion hit, a Tentacle is summoned for 8 seconds (up to a maximum of 6 summons).

Physical Damage: 150 / 250 / 350 (+ 50% bonus AD)

For the duration, Harsh Lesson's cooldown is halved, all Tentacles awakened by Illaoi are untargetable, will not show their hitboxes, nor go dormant, and will take 0.5 seconds to make an attack; however they will then incur a lockout of 0.5 seconds before being able to start a new attack.

This does not affect the Tentacle attack from Tentacle Smash.

Targeting input: DirectionAffects: EnemiesDamage type: Area damageDamage sub-types: PhysicalSpell shield: See Notes

Notes (18)

This ability will cast from wherever the caster is at the end of the cast time.
Illaoi spawns the Tentacle 700 range away from her, unless there's a natural wall blocking the way making the Tentacle spawn on it, with an angle relative to the direction she's facing.
1+ champions: one Tentacle at 0 degrees. (towards Illaoi's facing direction)
2+ champions: one Tentacle at 60 degrees.
3+ champions: one Tentacle at 300 degrees.
4+ champions: one Tentacle at 120 degrees.
5+ champions: one Tentacle at 240 degrees.
6+ champions: one Tentacle at 180 degrees.
Tentacles may spawn on base barriers. If Illaoi is in the center of a base barrier, all Tentacles will spawn in the same position and stack over each other, making it appear as if there was only one Tentacle. [103] (unexpected)
Illaoi's facing direction is decided by the position of the cursor on cast, but can also be changed mid-cast through other effects, such as Flash. [104]
If there are no walls nearby, spawning the last Tentacle will form a perfect hexagon.
Spell shields will block the ability's damage but will not prevent Tentacles from spawning.
If Illaoi dies within 0.25 seconds of dropping down, she will spawn buffed Tentacles, but she won't manage in time to buff the already spawned ones. [105] (unexpected)
If Illaoi is near a Tentacle that is about to spawn, it will spawn buffed by Leap of Faith even if Illaoi is no longer nearby.
Using Harsh Lesson after Illaoi drops down will command Tentacles to immmediatelly start attacking, regardless if they were already mid animation. Any previous attack will continue to hit without an animation during the same time the second attack performs its animation. [106] (unexpected)
This makes it possible for the same tentacle to reduce its own damage by having the second attack hit too fast, which is not otherwise possible. [107]
Tentacles spawned are always sourced from Prophet of an Elder God, so they never benefit from Axiom Arcanist's damage amp, nor stack Spear of Shojin. [108]
After the buff expires, Tentacles will linger for an extra 0.25 seconds, allowing them to continue receiving commands and queuing up non-empowered attacks, while remaining not dormant. [109]

Stats and abilities from the League of Legends Wiki (CC BY-SA 3.0), built for patch 26.22.

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Test of Spirit

Cost: 35 / 40 / 45 / 50 / 55 ManaCooldown: 16 / 15 / 14 / 13 / 12Cast time: 0.25Range: 950 • 100Width: 100Tether radius: 1500 • 1700Speed: 1900Queue threshold: 0.5

Damage Transmission: 25 / 30 / 35 / 40 / 45% (+ 8% per 100 AD)

Enemies made a Vessel continuously spawn a Tentacle near themselves, when possible. Tentacles can spawn 300 units closer to each other than when spawned by Illaoi.

Notes (58)

PENDING FOR TEST: The self-reveal has not been fully tested for complete confirmation. Is the ability invisible when passing nearby minions and there is no enemy champion nearby? Is the tip of the ability enough to reveal her? Whether it can collide with a minion or not? Just if she's around the exit of the fog of war, and even if she points towards the inside of the fog of war? [69]
This ability will cast from wherever the caster is at the end of the cast time.
And will fire towards the same pointed location.
The projectile tentacle model is linked to Illaoi's model animation and size. However gameplay wise it is not, thus the actual hitbox being different than the position, width and length of the visible model. [70] (unexpected)
The model will stop mid-air / vanish if Illaoi goes into stasis, sleep or airborne, however the actual hitbox will continue its trajectory unseen. [71]
The tendril is destroyed if Illaoi dies before it hits a target. However, if it has already hit a target, then the Spirit pull will continue even if Illaoi has already died.
The tendril can be blocked by projectile-destroying effects (e.g. Yasuo's Wind Wall) and spell shields.
The spirit pull is not considered a crowd control effect and will not be blocked by crowd control immunity, with the exception of Morgana's Black Shield. [72] (unexpected)
Sion's Spirit cannot be spawned during Glory in Death. Spirits created before Sion's zombie state will remain active.
Spirits are classified as clones:
The Spirit spawns with the tethered champion's default model and size. [73]
Spirits can only be fully targeted by Illaoi's team and neutral monsters. The Spirit's allies cannot manually select it as a valid target for spells and abilities, but they can still do so with automatically targeted effects.
Spirits take 50% damage from turrets. [74] (unexpected)
Effects, like runes, may consider the Spirit as a champion for their stat-tracking. (unexpected)
Spirits cannot be healed nor shielded ( Summon Aery excluded).
Effects that are copied from the clone's caster to the clone, will also be copied from Illaoi to the Spirit (e.g Celestial Opposition). [75] (unexpected)
The Spirit levels up when the Vessel does, gaining the target's stats per level. If the target has a resource that also increases per level (i.e mana), the Spirit's lifetime will also visually increase, but not mechanically. [76] (unexpected)
Like other clones, killing the Spirit awards 25, but unlike other clones it doesn't award Experience. (note)
The Spirit is untargetable while it is being pulled.
The Spirit's lifetime is sometimes 0.25 seconds longer, while its untargetability is sometimes shorter, potentially causing Tentacles to hit an inconsistent amount of times, as was easily the case pre V25.15. [77] (unexpected)
The Spirit's destination is decided based on Illaoi's position and facing direction when the target is hit.
If the Spirit has no valid space to move to, it will get stuck and stay untargetable until its lifetime runs out. [78] [79] [80] [81] (unexpected)
The Spirit will sometimes desync its visual position from its gameplay one. [82] (unexpected)
If the target's health is reduced to 0 while their Spirit is being pulled out, and they do not die (i.e because of resurrection), then the Spirit will still spawn with 0 health, making it invulnerable. The target will successively become a Vessel when the Spirit's lifetime expires. [83] (unexpected)
If some effect regenerates the champion's health while they are resurrecting, and before the Spirit spawns, then the same will not apply. [84] [85]
Grabbing the Spirit of Viego will make the Spirit's lifetime (the white bar below the lifebar) disappear, similar to other cases in the past. [86] (unexpected)
PENDING FOR TEST: Post V12.8, does grabbing the Spirit of an Oathsworn make the Spirit invisible? [87]
The Spirit is immune to stasis (i.e. Bard's Tempered Fate).
Echoed damage is calculated by taking the pre-mitigation damage against the Spirit, applying Test of Spirit's damage modifier, and then capping it to the Spirit's current health. This damage will then be affected by damage modifiers (resistances and other effects) of the Vessel.
This order of operations allows Test of Spirit to deal more or less percentage of the Vessel's health than would be expected:
Because the Spirit's modifiers can be different from the Vessel's, allowing the Spirit to have higher or lower effective health, respectively increasing or decreasing the maximum pre-mitigated damage from killing it.
Because, while it would be expected to block excess pre-mitigated damage over what kills the Spirit, since the cap does not consider the Spirit's damage modifier, it may cause it to block damage before the Spirit is killed [88], or in corner cases not block excess damage even if it is killed. On the other hand, Test of Spirit's damage modifier is unexpectedly applied before the cap instead of after, with the same effect of potentially causing the cap to not block excess damage even if the Spirit is killed, or in corner cases block damage before it is killed.
The addition of the two, causes an increasing difference of expected damage when the pre-mitigated damage is between Spirit current health ÷ Spiritmod and Spirit current health ÷ Emod. (unexpected)
Illaoi needs 937.5 / 875 / 812.5 / 750 / 687.5 total AD to reach 100% echoed damage. As per above, the damage is still dependent on the Spirit's and Vessel's damage modifiers and may not always be able to deal 100% of the target's current health as total echoed damage.
Transferred damage will apply on-damage effects, such as damage amplifiers (e.g Last Stand), Black Cleaver, Morellonomicon, Executioner's Calling, Elixir of Sorcery, Sudden Impact, Shadowflame, The Collector, First Strike, Aspect of the Dragon burn damage, and The Darkin Scythe.
Echoed damage always counts as single target for the purpose of Omnivamp.
Echoed damage always counts as proc damage and thus will not doubly apply on-hit or on-spell effects versus the target (e.g. Liandry's Torment). These effects are only applied versus the Spirit.
Some effects like Sudden Impact are consumed by the target first, before the Spirit. Other effects like Hextech Alternator are consumed by the Spirit first, before the target.
Attacking the Vessel and its Spirit simultaneously will only apply one stack of Black Cleaver to the Vessel.
Pre-applied effects (e.g First Strike, Elixir of Sorcery, Bastionbreaker, Eclipse, Hextech Alternator, Scout's Slingshot, Fiora's Duelist's Dance, Leona's Sunlight, Qiyana's Royal Privilege and Terrashape, Renata's Leverage, Zoe's Sleepy Trouble Bubble, etc...), excluding pre-applied on-hit ones (e.g Sheen, Heartsteel), will cause the echoed damage to always deal double the proc damage, overwriting the source damage, potentially echoing much less or more damage than expected. [89] [90] (unexpected)
Since the actual tether range uses a different calculation from the indicator, it may often appear that the tether breaks before reaching the indicator. [91] [92] (unexpected)
When the tether is broken (whether the Spirit's lifetime ran out or the target moved out of range), the Spirit will vanish and move to Illaoi's location.
An uncancellable windup attack may still kill the Spirit after it vanished to grant the gold, but without making the target a Vessel and without echoing damage. [93]
When the Spirit is killed, it will remain in the same position for less than a second before moving to an unknown location. This will cancel any remaining Tentacle queued attacks, for the target being out of range. [94] [95] [96] (unexpected)
If the target that had its Spirit pulled from them is taken into the Realm of Death, the tether will break, but they will not be made into a Vessel.
Fiora's Riposte can be used to prevent becoming a Vessel if used before the Spirit is killed [97], or while leaving the tether's range. [98]
If the target is made a Vessel while resurrecting, some resurrections may cleanse the Vessel debuff, while others will not. [99] [100] (unexpected)
Spell shields can also prevent the slow upon becoming a Vessel. Spell shields will not prevent becoming a Vessel or Tentacles from attacking.
The application of the slowing missile cannot be blocked by projectile- destroying effects (e.g. Yasuo's Wind Wall).
Effects that destroy homing missiles (i.e certain untargetabilities) will prevent the application of the slowing missile.
The slowing missile will not be fired if the target is already untargetable when the Spirit dies.
Illaoi can better see than her allies who's been Vesseled, by adding a layer of watery effects on their model. The Vessel will also be let known it's debuffed, by having a layer of watery effects on its screen instead.
If the target becomes a Vessel while vanished, the layer on their model will fail to be added. [101] (unexpected)
The Vessel status effect is a debuff that doesn't persist through death.
If the Vessel debuff expires on the same server tick as the Tentacle becomes ready to slam, whether the slam occurs depends on which of the two spawned first. This is expected to be the Vessel, so no slam occurs.
The slam will occur on clones created after the Tentacle already spawned.
The following table refers for interactions while Illaoi is firing the projectile and while the target's Spirit is being pulled:
Death

Tips & tricks (2)

Other than area of effects, since damage amplifiers (e.g Last Stand), Aspect of the Dragon burn damage, and The Darkin Scythe apply on the Spirit and the Vessel individually and as separate instances of damage, their bonus damage through the echo is effectively enhanced. In particular, damage amplifiers and The Darkin Scyte will further apply on their own echoed bonus damage. [102]
The same does not apply for effects that apply post-mitigation (e.g Abyssal Mask, Bloodsong).

Map-specific differences (1)

Bonus gold earned from killing Spirits is ignored by the Swiftplay-specific bounty comeback system.