Cassiopeia is a Battlemage that deals magic (AP) damage and brings stun, slow. Their hard CC is tenacity-reducible, so Mercury's Treads and tenacity items shorten their lockdown. Below is Cassiopeia's highest-win-rate build from high-elo games; open the counter-build tool to tune it against your specific enemy team.
ABILITIES
PassiveSerpentine Grace
All Move Speed bonuses are more effective on Cassiopeia.
QNoxious Blast
Cassiopeia blasts an area with Poison after a brief delay, granting her increased Move Speed if she hits an enemy champion.
WMiasma
Cassiopeia releases several clouds of poison, slowing, grounding, and lightly damaging enemies that pass through them. Grounded enemies cannot use Movement abilities.
ETwin Fang
Cassiopeia lets loose an attack that deals increased damage to Poisoned targets and heals her for a percentage of the damage dealt. If the target dies from this attack, Cassiopeia regains Mana.
RPetrifying Gaze
Cassiopeia releases a swirl of magical energy from her eyes, stunning any enemies in front of her that are facing her and slowing any others with their back turned.
COMBAT PROFILE
Attack2
Defense3
Magic9
Difficulty10
PLAYING ASCassiopeia
Use Twin Fang on poisoned stationary targets like monsters and units stunned by her Petrifying Gaze for maximum damage.
Lead your enemy when targeting with Noxious Blast to ensure the hit.
PLAYING AGAINSTCassiopeia
Be wary of Cassiopeia's damage potential with Twin Fang when she has you poisoned.
Turn away from Cassiopeia when she is casting Petrifying Gaze to get slowed instead of stunned.
Hover a crowd-control type to see which ability it comes from.
HIGHEST WIN-RATE BUILD
SKILL PRIORITY
Twin Fang (E)Cassiopeia lets loose an attack that deals increased damage to Poisoned targets and heals her for a percentage of the damage dealt. If the target dies from this attack, Cassiopeia regains Mana.E→Noxious Blast (Q)Cassiopeia blasts an area with Poison after a brief delay, granting her increased Move Speed if she hits an enemy champion.Q
50.6% WR2,092 matches
SKILL PATH leveling order
Noxious Blast (Q)Cassiopeia blasts an area with Poison after a brief delay, granting her increased Move Speed if she hits an enemy champion.QNoxious Blast
1
8
10
12
13
Miasma (W)Cassiopeia releases several clouds of poison, slowing, grounding, and lightly damaging enemies that pass through them. Grounded enemies cannot use Movement abilities.WMiasma
4
14
15
17
18
Twin Fang (E)Cassiopeia lets loose an attack that deals increased damage to Poisoned targets and heals her for a percentage of the damage dealt. If the target dies from this attack, Cassiopeia regains Mana.ETwin Fang
2
3
5
7
9
Petrifying Gaze (R)Cassiopeia releases a swirl of magical energy from her eyes, stunning any enemies in front of her that are facing her and slowing any others with their back turned.RPetrifying Gaze
6
11
16
Deathfire Touch keystone
Sorcery
Summon Aery
Arcane Comet
Stormraider's Surge
Deathfire Touch
Axiom Arcanist
Manaflow Band
Nimbus Cloak
Transcendence
Celerity
Absolute Focus
Scorch
Waterwalking
Gathering Storm
Precision
Press the Attack
Lethal Tempo
Fleet Footwork
Conqueror
Absorb Life
Triumph
Presence of Mind
Legend: Alacrity
Legend: Haste
Legend: Bloodline
Coup de Grace
Cut Down
Last Stand
SUMMONER SPELLS
BUILD PATH · win rate by item
STARTING
Doran's Ring18 Ability Power
90 Health
Drain
Restore 1 Mana every second, increased to 2 Mana per second for 5 seconds after dealing damage to an enemy champion. If you can't gain Mana, heal for 45% of this value instead.
Helping Hand
Attacks deal 5 bonus physical damage to minions.Cost: 400Health PotionConsume
Restores 120 Health over 15 seconds.Cost: 50
Best opening
BOOTS
Swiftmarch65 Move Speed
Fleetfooted
Reduce the effectiveness of Slows by 25%.
Noxian Fervor
Gain 5% of your Move Speed as Adaptive Force.Cost: 1000
Most common
CORE
Rod of Ages45 Ability Power
350 Health
500 Mana
Timeless
This item gains 10 Health, 30 Mana and 3 Ability Power every 60 seconds up to 10 times. Upon reaching max stacks, gain a level.
Eternity
Taking damage from champions restores 10% of the damage as Mana.
Casting an ability heals for 25% of Mana spent.Cost: 2600 · 450 to build→Archangel's Staff70 Ability Power
600 Mana
25 Ability Haste
Awe
Gain Ability Power equal to 1% bonus Mana.
Manaflow (8s, max 5 charges)
Landing Abilities grants 5 max Mana (doubled vs. champions).
Transforms into Seraph's Embrace at 360 max Mana.Cost: 2900 · 450 to build
Build every game
3RD ITEM
Rylai's Crystal Scepter65 Ability Power
400 Health
Rimefrost
Damaging Abilities Slow enemies by 30% for 1 second.Cost: 2600 · 450 to build54.2% WR568 games
Hextech Rocketbelt60 Ability Power
350 Health
20 Ability Haste
Supersonic
Dash in target direction, unleashing missiles that deal magic damage.Cost: 2650 · 350 to build54.4% WR272 games
What players go
4TH ITEM
Rylai's Crystal Scepter65 Ability Power
400 Health
Rimefrost
Damaging Abilities Slow enemies by 30% for 1 second.Cost: 2600 · 450 to build54.8% WR1120 games
Zhonya's Hourglass105 Ability Power
50 Armor
Time Stop
Enter Stasis for 2.5 seconds.Cost: 3250 · 450 to build52.6% WR213 games
Hextech Rocketbelt60 Ability Power
350 Health
20 Ability Haste
Supersonic
Dash in target direction, unleashing missiles that deal magic damage.Cost: 2650 · 350 to build63.6% WR88 games
What players go
5TH ITEM
Zhonya's Hourglass105 Ability Power
50 Armor
Time Stop
Enter Stasis for 2.5 seconds.Cost: 3250 · 450 to build55.8% WR292 games
Liandry's Torment60 Ability Power
300 Health
Torment
Damaging Abilities burn enemies for 2% max Health magic damage per second for 3 seconds.
Suffering
For each second in combat with enemy champions, deal 2% bonus damage, up to 6%.Cost: 3000 · 800 to build53.6% WR194 games
Rabadon's Deathcap130 Ability Power
Magical Opus
Increases your total Ability Power by 30%.Cost: 3500 · 1100 to build51.4% WR148 games
What players go
Based on 3461 games · 50.6% win rate · challenger+grandmaster+master+emerald-diamond+platinum-emerald · patch 16.18.1.
SKILL PRIORITY
Twin Fang (E)Cassiopeia lets loose an attack that deals increased damage to Poisoned targets and heals her for a percentage of the damage dealt. If the target dies from this attack, Cassiopeia regains Mana.E→Noxious Blast (Q)Cassiopeia blasts an area with Poison after a brief delay, granting her increased Move Speed if she hits an enemy champion.Q
52.8% WR296 matches
SKILL PATH leveling order
Noxious Blast (Q)Cassiopeia blasts an area with Poison after a brief delay, granting her increased Move Speed if she hits an enemy champion.QNoxious Blast
2
8
10
12
13
Miasma (W)Cassiopeia releases several clouds of poison, slowing, grounding, and lightly damaging enemies that pass through them. Grounded enemies cannot use Movement abilities.WMiasma
4
14
15
17
18
Twin Fang (E)Cassiopeia lets loose an attack that deals increased damage to Poisoned targets and heals her for a percentage of the damage dealt. If the target dies from this attack, Cassiopeia regains Mana.ETwin Fang
1
3
5
7
9
Petrifying Gaze (R)Cassiopeia releases a swirl of magical energy from her eyes, stunning any enemies in front of her that are facing her and slowing any others with their back turned.RPetrifying Gaze
6
11
16
Conqueror keystone
Precision
Press the Attack
Lethal Tempo
Fleet Footwork
Conqueror
Absorb Life
Triumph
Presence of Mind
Legend: Alacrity
Legend: Haste
Legend: Bloodline
Coup de Grace
Cut Down
Last Stand
Sorcery
Summon Aery
Arcane Comet
Stormraider's Surge
Deathfire Touch
Axiom Arcanist
Manaflow Band
Nimbus Cloak
Transcendence
Celerity
Absolute Focus
Scorch
Waterwalking
Gathering Storm
SUMMONER SPELLS
BUILD PATH · win rate by item
STARTING
Doran's Ring18 Ability Power
90 Health
Drain
Restore 1 Mana every second, increased to 2 Mana per second for 5 seconds after dealing damage to an enemy champion. If you can't gain Mana, heal for 45% of this value instead.
Helping Hand
Attacks deal 5 bonus physical damage to minions.Cost: 400Health PotionConsume
Restores 120 Health over 15 seconds.Cost: 50
Best opening
BOOTS
Boots of Swiftness55 Move Speed
Fleetfooted
Reduce the effectiveness of Slows by 25%.Cost: 1000 · 700 to build
Most common
CORE
Rod of Ages45 Ability Power
350 Health
500 Mana
Timeless
This item gains 10 Health, 30 Mana and 3 Ability Power every 60 seconds up to 10 times. Upon reaching max stacks, gain a level.
Eternity
Taking damage from champions restores 10% of the damage as Mana.
Casting an ability heals for 25% of Mana spent.Cost: 2600 · 450 to build→Archangel's Staff70 Ability Power
600 Mana
25 Ability Haste
Awe
Gain Ability Power equal to 1% bonus Mana.
Manaflow (8s, max 5 charges)
Landing Abilities grants 5 max Mana (doubled vs. champions).
Transforms into Seraph's Embrace at 360 max Mana.Cost: 2900 · 450 to build
Build every game
3RD ITEM
Rylai's Crystal Scepter65 Ability Power
400 Health
Rimefrost
Damaging Abilities Slow enemies by 30% for 1 second.Cost: 2600 · 450 to build58.8% WR340 games
Hextech Rocketbelt60 Ability Power
350 Health
20 Ability Haste
Supersonic
Dash in target direction, unleashing missiles that deal magic damage.Cost: 2650 · 350 to build47.2% WR36 games
What players go
4TH ITEM
Rylai's Crystal Scepter65 Ability Power
400 Health
Rimefrost
Damaging Abilities Slow enemies by 30% for 1 second.Cost: 2600 · 450 to build59.8% WR550 games
Liandry's Torment60 Ability Power
300 Health
Torment
Damaging Abilities burn enemies for 2% max Health magic damage per second for 3 seconds.
Suffering
For each second in combat with enemy champions, deal 2% bonus damage, up to 6%.Cost: 3000 · 800 to build52% WR171 games
Bloodletter's Curse65 Ability Power
400 Health
15 Ability Haste
Vile Decay
Dealing magic damage with abilities or passives to champions reduces their Magic Resist by 7.5% for 6 seconds. (Stacks 4 times).Cost: 2900 · 750 to build60% WR30 games
What players go
5TH ITEM
Zhonya's Hourglass105 Ability Power
50 Armor
Time Stop
Enter Stasis for 2.5 seconds.Cost: 3250 · 450 to build56.7% WR134 games
Liandry's Torment60 Ability Power
300 Health
Torment
Damaging Abilities burn enemies for 2% max Health magic damage per second for 3 seconds.
Suffering
For each second in combat with enemy champions, deal 2% bonus damage, up to 6%.Cost: 3000 · 800 to build63.5% WR115 games
What players go
Based on 1644 games · 52.8% win rate · challenger+grandmaster+master+emerald-diamond+platinum-emerald · patch 16.18.1.
SKILL PRIORITY
Twin Fang (E)Cassiopeia lets loose an attack that deals increased damage to Poisoned targets and heals her for a percentage of the damage dealt. If the target dies from this attack, Cassiopeia regains Mana.E→Noxious Blast (Q)Cassiopeia blasts an area with Poison after a brief delay, granting her increased Move Speed if she hits an enemy champion.Q
52.1% WR409 matches
SKILL PATH leveling order
Noxious Blast (Q)Cassiopeia blasts an area with Poison after a brief delay, granting her increased Move Speed if she hits an enemy champion.QNoxious Blast
1
8
10
12
13
Miasma (W)Cassiopeia releases several clouds of poison, slowing, grounding, and lightly damaging enemies that pass through them. Grounded enemies cannot use Movement abilities.WMiasma
4
14
15
17
18
Twin Fang (E)Cassiopeia lets loose an attack that deals increased damage to Poisoned targets and heals her for a percentage of the damage dealt. If the target dies from this attack, Cassiopeia regains Mana.ETwin Fang
2
3
5
7
9
Petrifying Gaze (R)Cassiopeia releases a swirl of magical energy from her eyes, stunning any enemies in front of her that are facing her and slowing any others with their back turned.RPetrifying Gaze
6
11
16
Deathfire Touch keystone
Sorcery
Summon Aery
Arcane Comet
Stormraider's Surge
Deathfire Touch
Axiom Arcanist
Manaflow Band
Nimbus Cloak
Transcendence
Celerity
Absolute Focus
Scorch
Waterwalking
Gathering Storm
Precision
Press the Attack
Lethal Tempo
Fleet Footwork
Conqueror
Absorb Life
Triumph
Presence of Mind
Legend: Alacrity
Legend: Haste
Legend: Bloodline
Coup de Grace
Cut Down
Last Stand
SUMMONER SPELLS
BUILD PATH · win rate by item
STARTING
Doran's Ring18 Ability Power
90 Health
Drain
Restore 1 Mana every second, increased to 2 Mana per second for 5 seconds after dealing damage to an enemy champion. If you can't gain Mana, heal for 45% of this value instead.
Helping Hand
Attacks deal 5 bonus physical damage to minions.Cost: 400Health PotionConsume
Restores 120 Health over 15 seconds.Cost: 50
Best opening
BOOTS
Boots of Swiftness55 Move Speed
Fleetfooted
Reduce the effectiveness of Slows by 25%.Cost: 1000 · 700 to build
Most common
CORE
Rod of Ages45 Ability Power
350 Health
500 Mana
Timeless
This item gains 10 Health, 30 Mana and 3 Ability Power every 60 seconds up to 10 times. Upon reaching max stacks, gain a level.
Eternity
Taking damage from champions restores 10% of the damage as Mana.
Casting an ability heals for 25% of Mana spent.Cost: 2600 · 450 to build→Archangel's Staff70 Ability Power
600 Mana
25 Ability Haste
Awe
Gain Ability Power equal to 1% bonus Mana.
Manaflow (8s, max 5 charges)
Landing Abilities grants 5 max Mana (doubled vs. champions).
Transforms into Seraph's Embrace at 360 max Mana.Cost: 2900 · 450 to build
Build every game
3RD ITEM
Rylai's Crystal Scepter65 Ability Power
400 Health
Rimefrost
Damaging Abilities Slow enemies by 30% for 1 second.Cost: 2600 · 450 to build51.2% WR84 games
Liandry's Torment60 Ability Power
300 Health
Torment
Damaging Abilities burn enemies for 2% max Health magic damage per second for 3 seconds.
Suffering
For each second in combat with enemy champions, deal 2% bonus damage, up to 6%.Cost: 3000 · 800 to build60.4% WR48 games
What players go
4TH ITEM
Rylai's Crystal Scepter65 Ability Power
400 Health
Rimefrost
Damaging Abilities Slow enemies by 30% for 1 second.Cost: 2600 · 450 to build58.9% WR168 games
Zhonya's Hourglass105 Ability Power
50 Armor
Time Stop
Enter Stasis for 2.5 seconds.Cost: 3250 · 450 to build52.6% WR38 games
Bloodletter's Curse65 Ability Power
400 Health
15 Ability Haste
Vile Decay
Dealing magic damage with abilities or passives to champions reduces their Magic Resist by 7.5% for 6 seconds. (Stacks 4 times).Cost: 2900 · 750 to build59.3% WR27 games
What players go
5TH ITEM
Zhonya's Hourglass105 Ability Power
50 Armor
Time Stop
Enter Stasis for 2.5 seconds.Cost: 3250 · 450 to build59.3% WR59 games
Rylai's Crystal Scepter65 Ability Power
400 Health
Rimefrost
Damaging Abilities Slow enemies by 30% for 1 second.Cost: 2600 · 450 to build62.5% WR24 games
What players go
Based on 582 games · 52.1% win rate · challenger+grandmaster+master+emerald-diamond+platinum-emerald · patch 16.18.1.