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Matchup

Rumble
Rumble
27%
73%

vs

50.0%
Kog'Maw
KogMaw
62%
38%
Sustained DPSHeavy AD damageHeavy AP damage

Build vs Kog'Maw

Build adapted to this matchup

Starting items

Doran's Ring
Health Potion
x2

Core build

Dark Seal
1
Liandry's Torment
2Mage tank
Shadowflame
3vs Tank

Standard

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

Summoner spells

41483%
41213%

Anti AD

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

Anti Heal

Morellonomicon
6vs Heal

Anti CC

Mercury's Treads
4vs CC

Anti Tank

Bloodletter's Curse
5vs Tank

DPS

Hextech Rocketbelt
Mage tank
Rabadon's Deathcap
Mage
Riftmaker
Mage tank
100.0% WR1 games
SorcerySorcery
Deathfire TouchDeathfire Touch
Nimbus CloakNimbus Cloak
Absolute FocusAbsolute Focus
ScorchScorch
ResolveResolve
UnflinchingUnflinching
Bone PlatingBone Plating
Adaptive ForceAdaptive ForceHealth Scaling

Power Spikes

Strength by game phase

Early (0-15)
Mid (15-30)
Late (30+)
RumbleRumble
KogMawKog'Maw
Aggressive
Neutral
Passive

Kog'Maw's abilities

Passive, spells and ultimate

Icathian Surprise (P)

4 seconds after dying, Kogmaw explodes, dealing true damage to surrounding enemies.

Cooldowns

Cooldowns by spell rank

LevelQWER
37s17s12s–
67s17s12s2s
97s17s12s2s
117s17s12s1.5s
167s17s12s1s
187s17s12s1s

Playing against Kog'Maw

How to counter and exploit weaknesses

1

Kog'Maw has ZERO mobility — dive him with assassins or engages. One CC = one kill.

2

His W has an uptime/downtime: when W expires, his range returns to normal (500). Engage at that moment.

3

Assassins (Zed, Talon, Fizz) destroy him — he relies entirely on his team to protect him.

4

Buy HP and MR: his W deals magic damage as % max HP, but MR still reduces it.

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