Matchup

Fiora
Fiora
83%
17%

vs

49.6%

over 139 games

Cassiopeia
Cassiopeia
18%
82%
Heavy AP damageSustained DPSHeavy CC

Skill matchup

Build vs Cassiopeia

Build adapted to this matchup

Starting items

Doran's Blade
Health Potion

Core build

Ravenous Hydra
1DPS
Trinity Force
2DPS
Spear of Shojin
3Bruiser

Standard

Boots of Swiftness
4vs Slow
Death's Dance
5vs AD

Summoner spells

41484%
4128%

Anti AD

Plated Steelcaps
4vs AD
Death's Dance
5vs AD
Guardian Angel
vs AD

Anti AP

Mercury's Treads
4vs CC
Maw of Malmortius
5vs AP

Anti Tank

Voltaic Cyclosword
5vs Tank

DPS

Hullbreaker
Bruiser
Endless Hunger
DPS
Eclipse
DPS

Other options

Sterak's Gage
Survival
100.0% WR3 games
PrecisionPrecision
Press the AttackPress the Attack
TriumphTriumph
Legend: AlacrityLegend: Alacrity
Last StandLast Stand
InspirationInspiration
Jack Of All TradesJack Of All Trades
Biscuit DeliveryBiscuit Delivery
Adaptive ForceAdaptive ForceHealth

Power Spikes

Strength by game phase

Early (0-15)
Mid (15-30)
Late (30+)
FioraFiora
CassiopeiaCassiopeia
Neutral
Neutral
Neutral

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