Matchup

Heavy AD damageSustained DPSHigh sustainSplit push

Build vs Illaoi

Build adapted to this matchup

Starting items

Health Potion
x2

Core build

Moonstone Renewer
1HP
Staff of Flowing Water
2
Dawncore
3

Standard

Boots of Swiftness
4vs Slow
Dream Maker
5HP

Summoner spells

41450%
4750%

Anti CC

Mercury's Treads
4vs CC

Other options

Dream Maker
HP
Redemption
Ardent Censer
Shurelya's Battlesong
100.0% WR1 games
SorcerySorcery
Summon AerySummon Aery
Manaflow BandManaflow Band
CelerityCelerity
Gathering StormGathering Storm
ResolveResolve
RevitalizeRevitalize
Font of LifeFont of Life
Adaptive ForceMove SpeedHealth Scaling

Power Spikes

Strength by game phase

Early (0-15)
Mid (15-30)
Late (30+)
JannaJanna
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