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Matchup

Cassiopeia
Cassiopeia
18%
82%

vs

50.0%
Rek'Sai
RekSai
80%
20%
Heavy AD damageDive threatCountered by stasisStrong engage

You are stronger early — look to snowball before your opponent scales.

Build vs Rek'Sai

Build adapted to this matchup

Starting items

Doran's Ring
Health Potion
x2

Core build

Seraph's Embrace
1Mage
Rylai's Crystal Scepter
2Mage tank
Riftmaker
3Mage tank

Standard

Sorcerer's Shoes
4Magic pen
Rod of Ages
5HP

Summoner spells

41450%
41225%

Anti AD

Plated Steelcaps
4vs AD
Zhonya's Hourglass
5vs AD

Anti CC

Mercury's Treads
4vs CC

Anti Tank

Bloodletter's Curse
5vs Tank
Stormsurge
vs Tank

DPS

Liandry's Torment
Mage tank
Rabadon's Deathcap
Mage
Cosmic Drive
Mage tank

Other options

Rod of Ages
HP
100.0% WR1 games
PrecisionPrecision
ConquerorConqueror
Presence of MindPresence of Mind
Legend: HasteLegend: Haste
Last StandLast Stand
SorcerySorcery
TranscendenceTranscendence
Manaflow BandManaflow Band
Adaptive ForceAdaptive ForceHealth Scaling

Power Spikes

Strength by game phase

Early (0-15)
Mid (15-30)
Late (30+)
CassiopeiaCassiopeia
RekSaiRek'Sai
Passive
Neutral
Aggressive

Rek'Sai's abilities

Passive, spells and ultimate

Fury of the Xer'Sai (P)

Rek'Sai generates Fury by Attacking and hitting with basic Abilities. She consumes this Fury while Burrowed to restore health.

Cooldowns

Cooldowns by spell rank

LevelQWER
34s4s6s–
63s4s6s2m
92s4s6s2m
112s4s6s1m40
162s4s6s1m20
182s4s6s1m20

Playing against Rek'Sai

How to counter and exploit weaknesses

1

Destroy her tunnels when you find them — each tunnel is a passage she can reuse to escape or engage.

2

Her knockup (W) has short range: she must be very close to knock you up.

3

Rek'Sai is strong in the early game: respect her ganks with tremorsense. Play safe.

4

Her R makes her visible and she dashes in a straight line: a well-placed CC stops her.

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