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Matchup

Heimerdinger
Heimerdinger
20%
80%

vs

50.0%
Katarina
Katarina
31%
69%
Countered by stasisHigh burstDive threatHeavy AP damage

Build vs Katarina

Build adapted to this matchup

Starting items

Doran's Ring
Health Potion
x2

Core build

Blackfire Torch
1Mage
Liandry's Torment
2Mage tank
Void Staff
3vs Tank

Standard

Sorcerer's Shoes
4Magic pen
Zhonya's Hourglass
5vs AD

Summoner spells

41254%
41431%

Anti AD

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

Anti CC

Mercury's Treads
4vs CC

Anti Tank

Shadowflame
5vs Tank
Stormsurge
vs Tank

DPS

Rabadon's Deathcap
Mage
Rylai's Crystal Scepter
Mage tank
100.0% WR1 games
PrecisionPrecision
ConquerorConqueror
Presence of MindPresence of Mind
Legend: HasteLegend: Haste
Cut DownCut Down
SorcerySorcery
Absolute FocusAbsolute Focus
Gathering StormGathering Storm
Adaptive ForceAdaptive ForceHealth Scaling

Power Spikes

Strength by game phase

Early (0-15)
Mid (15-30)
Late (30+)
HeimerdingerHeimerdinger
KatarinaKatarina
Passive
Favorable
Favorable

Katarina's abilities

Passive, spells and ultimate

Voracity (P)

Whenever an enemy champion dies that Katarina has damaged recently, her remaining ability cooldowns are dramatically reduced.If Katarina picks up a Dagger, she uses it to slash through all nearby enemies, dealing magic damage.

Cooldowns

Cooldowns by spell rank

LevelQWER
311s15s12s–
69s15s12s1m15
97s14s12s1m15
117s13s12s1m
167s11s10s45s
187s11s8s45s

Playing against Katarina

How to counter and exploit weaknesses

1

Save a CC to interrupt her R (Death Lotus) — she's very vulnerable during the channel.

2

Avoid daggers on the ground: don't walk over them and stay away from where they land.

3

Katarina is weak before level 6 and in short trades without her daggers — punish her early.

4

Buy MR: her damage is almost 100% magic, even in on-hit builds.

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