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Matchup

Xerath
Xerath
9%
91%

vs

50.0%
Illaoi
Illaoi
73%
27%
Heavy AD damageSustained DPSHigh sustainSplit push

Build vs Illaoi

Build adapted to this matchup

Starting items

Doran's Ring
Health Potion
x2

Core build

Luden's Echo
1Mage
Shadowflame
2vs Tank
Horizon Focus
3Mage

Standard

Sorcerer's Shoes
4Magic pen
Rabadon's Deathcap
5Mage

Summoner spells

41279%
42116%

Anti AD

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

Anti CC

Mercury's Treads
4vs CC

Anti Tank

Void Staff
5vs Tank
Stormsurge
vs Tank

DPS

Rabadon's Deathcap
Mage

Other options

Dark Seal
100.0% WR2 games
SorcerySorcery
Arcane CometArcane Comet
Manaflow BandManaflow Band
TranscendenceTranscendence
ScorchScorch
PrecisionPrecision
Presence of MindPresence of Mind
Coup de GraceCoup de Grace
Adaptive ForceAdaptive ForceHealth Scaling

Power Spikes

Strength by game phase

Early (0-15)
Mid (15-30)
Late (30+)
XerathXerath
IllaoiIllaoi
Neutral
Neutral
Neutral

Illaoi's abilities

Passive, spells and ultimate

Prophet of an Elder God (P)

Illaoi and the Vessels she creates spawn Tentacles on nearby impassible terrain. Tentacles swing at spirits, Vessels, and victims of Illaoi's Harsh lesson. Tentacles deal physical damage to enemies hit, and will heal Illaoi if they damage a champion.

Cooldowns

Cooldowns by spell rank

LevelQWER
310s4s16s–
68s4s16s2m
96s4s16s2m
116s4s16s1m35
166s4s14s1m10
186s4s12s1m10

Playing against Illaoi

How to counter and exploit weaknesses

1

Dodge her E (Test of Spirit) at all costs — if she pulls your spirit, you must flee the area or fight at a massive disadvantage.

2

NEVER fight Illaoi in her tentacles: lure her elsewhere. Destroy tentacles when you can.

3

Her R is dangerous with multiple champions nearby — don't group on her. Fight her in a 1v1 outside her zone.

4

Illaoi has no mobility or hard CC: ganks and kiting are very effective.

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