Matchup

Heavy AP damageSustained DPSHeavy CC

Build vs Cassiopeia

Build adapted to this matchup

Starting items

Health Potion
x2

Core build

Locket of the Iron Solari
1HP
Moonstone Renewer
2HP
Protoplasm Harness
3Survival

Standard

Ionian Boots of Lucidity
4CDR
Dream Maker
5HP

Summoner spells

47100%

Anti CC

Mercury's Treads
4vs CC

Other options

Dream Maker
HP
Redemption
Celestial Opposition
HP
Ardent Censer
Dawncore
Warmog's Armor
Survival
100.0% WR1 games
SorcerySorcery
Summon AerySummon Aery
Manaflow BandManaflow Band
TranscendenceTranscendence
ScorchScorch
ResolveResolve
RevitalizeRevitalize
Bone PlatingBone Plating
Adaptive ForceAdaptive ForceHealth Scaling

Power Spikes

Strength by game phase

Early (0-15)
Mid (15-30)
Late (30+)
SorakaSoraka
CassiopeiaCassiopeia
Favorable
Favorable
Passive

Cassiopeia's abilities

Passive, spells and ultimate

Serpentine Grace (P)

All Move Speed bonuses are more effective on Cassiopeia.

Cooldowns

Cooldowns by spell rank

LevelQWER
33.5s24s0.75s
63.5s24s0.75s2m
93.5s22s0.75s2m
113.5s20s0.75s1m40
163.5s16s0.75s1m20
183.5s16s0.75s1m20

Playing against Cassiopeia

How to counter and exploit weaknesses

1

Turn away when she casts her R: you'll be slowed instead of stunned if you're not facing her.

2

Her DPS depends on landing Q (poison) — if she misses Q, she can't effectively spam E.

3

W prevents dashes: do NOT dash into the zone, go around it.

4

Cassiopeia doesn't have boots — slows are particularly effective against her.

Source: op.gg + LTL Engine · Patch 16.9.1 · May 9, 2026