Matchup

MasterYi
Master Yi
83%
17%

vs

52.5%

over 101 games

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

Skill matchup

You are stronger late game — farm safe and avoid early trades.

Build vs Illaoi

Build adapted to this matchup

Starting items

Doran's Blade
Health Potion

Core build

Blade of The Ruined King
1DPS
Kraken Slayer
2DPS
Guinsoo's Rageblade
3

Standard

Berserker's Greaves
4AS
Titanic Hydra
5Bruiser

Summoner spells

41494%
4123%

Anti AD

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

Anti Heal

Mortal Reminder
6vs Hybride

Anti AP

Mercury's Treads
4vs CC
Mercurial Scimitar
5vs AP

Anti Tank

Terminus
5vs Tank
The Collector
vs Tank
Lord Dominik's Regards
vs Tank
Profane Hydra
vs Tank

DPS

Titanic Hydra
Bruiser
Infinity Edge
DPS
Experimental Hexplate
Bruiser
100.0% WR3 games
DominationDomination
Hail of BladesHail of Blades
Sudden ImpactSudden Impact
Grisly MementosGrisly Mementos
Treasure HunterTreasure Hunter
PrecisionPrecision
Legend: AlacrityLegend: Alacrity
TriumphTriumph
Attack SpeedAdaptive ForceHealth Scaling

Power Spikes

Strength by game phase

Early (0-15)
Mid (15-30)
Late (30+)
MasterYiMaster Yi
IllaoiIllaoi
Careful
Careful
Aggressive

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