Passive
Serpentine Grace
Innate: Cassiopeia increases the effectiveness of all movement speed bonuses by 5% – 36% (based on level).
Targeting input: PassiveAffects: Self
Notes (1)
- No additional details.
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Data476 pro games·Jan 2022 – Nov 2026·patches 12.2–26.22·CBLOL, First Stand, LCK, LCO Split, LCP, LCS, LEC, LJL, LLA, LPL, LTA, MSI, PCS, Worlds· incl. international·Browse source →
Comp identity — Mid / Bot / Top
Leans Attack — 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)
- Attackworkable · 40%
- Siegeworkable · 40%
- Catchworkable · 30%
- Cassiopeia can hold up an Attack plan — it chains the fight with lockdown once contact is made — but a Attack-first shell gets more out of it (Attack 4/10 vs Attack 4/10).
Kit quirks
- W (Miasma) doesn't just slow — it applies 'grounded,' which explicitly PREVENTS dashes/blinks in the zone, a stronger anti-mobility tool than a simple slow
- E (Twin Fang) heals HER (not allies) when it hits a poisoned target, a self-sustain combo tied to prior poison application
- All her real damage requires standing within ~700 units — she has no long-range safe poke comparable to true siege mages
How Cassiopeia actually performs in ranked solo queue · 92 weighted games
Solo queue strength
- Mid56% WR · 51.9 games
- Bot50% WR · 23.2 games
- Top48% WR · 16.5 games
- Support50% WR · 0.2 games
Strongest duos
Best matchups
No favored matchups recorded.
Hardest matchups
No losing matchups recorded.
Dragons & win rate
Win rate when Cassiopeia's team secured at least one of each drake, next to the all-champion rate in that same state. Teams that take dragons are usually already ahead, so every champ wins more with them — the honest read is the gap, i.e. whether Cassiopeia beats the average team that also has the drake. Single-drake samples are thin; treat small counts as suggestive.
Cloud71%vs 60% avg+11pp48g
Mountain (Earth)59%vs 59% avg0pp39g
Hextech61%vs 62% avg-1pp38g
Ocean77%vs 63% avg+14pp35g
Infernal70%vs 60% avg+10pp33g
Chemtech69%vs 62% avg+7pp29g
Champion reference
Base stats and every ability with its per-rank values and ratios. Search all champions →
Cassiopeia (Cassiopeia Du Couteau) — The Serpent's Embrace
- Class
- Battlemage
- Resource
- Mana
- Range type
- Ranged
- Adaptive type
- Magic
- Positions
- Middle
- Released
- 2010-12-14 (V1.0.0.107)
- Last changed
- V26.20
- Price
- 2,400 BE · 880 RP
Damage
Toughness
Control
Mobility
Utility
Difficulty
Base stats
| Stat | Base | Per level | Level 18 |
|---|---|---|---|
| Health | 610 | +98 | 2276 |
| Health regen (per 5s) | 5.5 | +0.5 | 14 |
| Mana | 450 | +40 | 1130 |
| Mana regen (per 5s) | 8 | +0.8 | 21.6 |
| Armor | 18 | +4.7 | 97.9 |
| Magic resist | 32 | +1.3 | 54.1 |
| Attack damage | 53 | +3 | 104 |
| Attack speed | 0.647 | +1.5% | 0.812 |
| Attack speed ratio | 0.647 | ||
| Attack range | 550 | ||
| Movement speed | 335 |
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
- 120
- Selection radius
- 120
- Pathing radius
- 35
- Attack delay offset
- -0.108
- Basic attack missile speed
- 1500
Arena: health per level -10
URF: damage dealt ×0.95 · damage taken ×1.05
Abilities
Passive
Serpentine Grace
Innate: Cassiopeia increases the effectiveness of all movement speed bonuses by 5% – 36% (based on level).
Targeting input: PassiveAffects: Self
Notes (1)
- No additional details.
Q
Noxious Blast
Cost: 50 / 55 / 60 / 65 / 70 manaCooldown: 3.5Cast time: 0.25Target range: 850Effect radius: 200
Active: Cassiopeia creates a blast at the target location that explodes after a 0.4-second delay. Enemies within the blast are poisoned for 3 seconds, taking magic damage every 0.429 seconds over the duration.
- Total Magic Damage
- 65 / 100 / 135 / 170 / 205 (+ 75% AP)
- Magic Damage Per Tick
- 9.29 / 14.29 / 19.29 / 24.29 / 29.29 (+ 10.71% AP)
If Noxious Blast hits an enemy champion, Cassiopeia gains bonus movement speed that decays over 3 seconds.
- Bonus Movement Speed
- 30 / 35 / 40 / 45 / 50%
Targeting input: LocationTarget out-of-range override: Walk in range of the target location to castAffects: EnemiesDamage type: AOE DOT damageDamage sub-types: MagicSpell shield: Blocked
Notes (9)
- Noxious Blast always uses quick cast, regardless of player settings.
- The damage inflicted by Noxious Blast is calculated as follows: damage / 7 ticks rounded down to the nearest integer.
- For example: with 0 bonus AP Noxious Blast inflicts 75 damages over 7 ticks of damage, so 75/7 (≈10.71) deals first of all 10 damage, then (2 × 75/7) − 10 (≈11.43) deals in a second time 11 damages, then (3 × 75/7) − 10 − 11 (≈11.14) deals in a third time 11 damages, and so on.
- The damage displayed for Noxious Blast DOT (Damage_over_time) always remains constant and corresponds to the previously mentioned formula: damage / 7 ticks rounded down to the nearest integer. It's important not to confuse the consistent displayed damage with the actual damage, which is updated with each tick, see tick and updates.
- With the same example as above, the damage displayed is always 10.
- Occasionally, Noxious Blast may not deal the displayed damage. This discrepancy occurs when the calculated damage falls between 0.5 and 1. In such cases, rounding to the nearest integer, specifically rounding up, creates a 1-point difference. It's important to note that the damage is rounded down to the nearest integer.
- For example: with a Blasting Wand's, Noxious Blast shows so rounded to the nearest integer 116 magic damage, but really deals using the formula above 115 magic damage.
- (bug) When Cassiopeia has precisely 20 bonus AP or 40 bonus AP. In this scenario, Noxious Blast may inflict 1 less damage than intended. Importantly, this bug occurs independently of rounding considerations.
- PENDING FOR TEST: Enemies within the blast of Noxious Blast are poisoned for something between 3.2 and 3.3 seconds.
W
Miasma
Cost: 70 / 75 / 80 / 85 / 90 ManaCooldown: 24 / 22 / 20 / 18 / 16Cast time: 0.25Target range: 700Effect radius: 200Speed: 3000Queue threshold: 0.35
Active: Cassiopeia spews forth 7 bolts of venom in an arc at the target location, creating toxic clouds at the area for 5 seconds.
Enemies within the clouds are poisoned to take magic damage every 0.263 seconds and become grounded and slowed by an amount that decays over the area's duration.
- Magic Damage Per Second
- 20 / 25 / 30 / 35 / 40 (+ 10% AP)
- Total Magic Damage
- 100 / 125 / 150 / 175 / 200 (+ 50% AP)
- Slow
- 40 / 50 / 60 / 70 / 80%
Targeting input: LocationTarget out-of-range override: Target at maximum range (clamped)Affects: EnemiesDamage type: AOE DOT damageDamage sub-types: MagicSpell shield: Not BlockedProjectile: Blocked
Notes (5)
- Miasma's slow and ground debuffs are each marked as non-dispellable, so they are not removed by most cleanses. Each is however allowed to be removed by cleanses that also grant immunity to the debuff type, such as Olaf's Ragnarok.
- If a target becomes untargetable while affected by the ground, the debuff will refresh to 0.25 seconds.
- Wind Wall will block the portion of Miasma it destroys.
- Miasma inflicts 5 / 6.25 / 7.5 / 8.75 / 10 (+ 2.5% AP) magic damage per tick, and in fact because there is 19 ticks and not 20 ticks, the total magic damage is currently not 100 / 125 / 150 / 175 / 200 (+ 50% AP) but 95 / 118.75 / 142.5 / 166.25 / 190 (+ 47.5% AP).
- Sometimes Miasma randomly inflicts only 18 ticks of damage.(bug)
Map-specific differences (1)
- Cooldown changed to 28 / 26 / 24 / 22 / 20 seconds.
E
Twin Fang
Cost: 45 ManaCooldown: 0.75Cast time: 0.125Target range: 700Speed: 2500Queue threshold: 0.35
Active: Cassiopeia launches her fangs at the target enemy that deal 50 – 120 (based on level) (+ 20% AP) magic damage. If this kills the target, Twin Fang's mana cost is refunded.
Against a poisoned target, Twin Fang deals bonus magic damage and heals Cassiopeia. The heal is reduced by 75% against minions and small and medium monsters.
- Bonus Magic Damage
- 20 / 45 / 70 / 95 / 120 (+ 45% AP)
- Total Enhanced Damage
- 50 – 120 (based on level) (+ 20 / 45 / 70 / 95 / 120) (+ 65% AP)
- Heal
- 10 / 11.5 / 13 / 14.5 / 16% AP
- Reduced Heal
- 2.5 / 2.875 / 3.25 / 3.625 / 4% AP
Targeting input: UnitTarget out-of-range override: Walk in range of the target unit to castAffects: EnemiesDamage type: Ability damageDamage sub-types: MagicMinion Aggro: DrawnSpell shield: BlockedProjectile: Blocked
Notes (9)
- Upon reaching the target, Twin Fang will wait for an ongoing Noxious Blast to explode before dealing its damage.
- Twin Fang's damage against poisoned targets:
- When maxed first: 70 – 240 (based on level) (+ 65% AP).
- When maxed second: 70 – 240 (based on level) (+ 65% AP).
- When maxed last: 70 – 240 (based on level) (+ 65% AP).
- Twin Fang's cast indicator is incorrectly adding her own radius to the range like an edge range ability, and is therefore slightly larger than the actual cast range Twin Fang can cast at.
- Using Twin Fang on an out-of-range target after completing a movement order causes Cassiopeia to move back to her original location after casting, if no other order is issued during the entire process.(unexpected)
- This may be a consequence of Twing Fang being a "Walk in range of the target" ability that does not interrupt movement commands.
- If the target becomes untargetable, dies, or is too far away or no longer in sight during the cast time, this ability will cancel but does not go on cooldown nor pay its cost (if applicable).
Tips & tricks (1)
- Because 700 centered range is equal to [ 700 − 65 − 65 = 570 ] edge range (where 65 is the typical champion size) which is close to her basic attack range of 550 units, and because her movement orders are not interrupted when Twin Fang is cast, Twin Fang allows the player to continue kiting effectively and repeatedly.
Map-specific differences (2)
- Poisoned damage AP ratio changed to 40% AP.
- Poisoned heal AP ratio changed to 7 / 7.5 / 8 / 8.5 / 9% AP.
R
Petrifying Gaze
Cost: 100 manaCooldown: 120 / 100 / 80Cast time: 0.5Effect radius: 850Angle: 80°
Active: Cassiopeia blasts enemies in a cone in the target direction, dealing magic damage to enemies struck within and slowing them by 40% for 2 seconds. Enemies with their facing direction towards her are instead stunned for the same duration.
- Magic Damage
- 125 / 225 / 325 (+ 75% AP)
Targeting input: DirectionAffects: EnemiesDamage type: Area damageDamage sub-types: MagicSpell shield: BlockedProjectile: Not Blocked
Notes (7)
- This ability will cast from wherever the caster is at the end of the cast time.
- Regarding Petrifying Gaze applying the stun, facing Cassiopeia means facing the opposite general direction (angle) as her; this direction bisects an 180 degree arc of a radius through her and her enemy. In other words, effectively, she must be "looking" toward the enemy.
- Cassiopeia will turn to face the target direction over the cast time.
- Petrifying Gaze's target direction will change if Cassiopeia's facing direction changes during the cast time (i.e. through knockbacks).
- The visual effect will not follow changes in Cassiopeia's facing direction and may not portray Petrifying Gaze's target direction accurately.(bug)
- The facing direction of champions whose abilities/animations cause them to lock their facing or spin is always the direction they are moving in. For abilities that cause the champion to spin in place (e.g. Death Lotus, Judgment) it will factor the direction they were facing on cast.
- Lucian's The Culling is an exception and his facing direction is actually considered to be the direction he is facing.
Map-specific differences (2)
- Base damage changed to 100 / 175 / 250.
- AP ratio changed to 40% AP.
Stats and abilities from the League of Legends Wiki (CC BY-SA 3.0), built for patch 26.22.