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Matchup

Kennen
Kennen
46%
54%

vs

49.3%

over 223 games

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

Skill matchup

Build vs Illaoi

Build adapted to this matchup

Starting items

Doran's Blade
Health Potion

Core build

Hextech Gunblade
1Mage
Shadowflame
2vs Tank
Rabadon's Deathcap
3Mage

Standard

Sorcerer's Shoes
4Magic pen
Hextech Rocketbelt
5Mage tank

Summoner spells

41467%
41226%

Anti AD

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

Anti Heal

Morellonomicon
6vs Heal

Anti AP

Mercury's Treads
4vs CC
Banshee's Veil
5vs AP

Anti Heal

Mortal Reminder
6vs Hybride

Anti Tank

Void Staff
5vs Tank
Stormsurge
vs Tank

DPS

Hextech Rocketbelt
Mage tank
Statikk Shiv
DPS
Infinity Edge
DPS
Liandry's Torment
Mage tank
Hexoptics C44
DPS
Blade of The Ruined King
DPS
Runaan's Hurricane
DPS
Kraken Slayer
DPS
Fiendhunter Bolts
DPS
Yun Tal Wildarrows
DPS
Navori Flickerblade
DPS
Phantom Dancer
DPS
Rapid Firecannon
DPS

Other options

Dark Seal
Guinsoo's Rageblade
100.0% WR4 games
DominationDomination
ElectrocuteElectrocute
Taste of BloodTaste of Blood
Grisly MementosGrisly Mementos
Ultimate HunterUltimate Hunter
SorcerySorcery
Absolute FocusAbsolute Focus
ScorchScorch
Attack SpeedAdaptive ForceHealth Scaling

Power Spikes

Strength by game phase

Early (0-15)
Mid (15-30)
Late (30+)
KennenKennen
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 8, 2026