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Matchup

Poppy
Poppy
75%
25%

vs

50.0%
Kassadin
Kassadin
27%
73%
Heavy AP damageHigh burstDive threatSplit push

Build vs Kassadin

Build adapted to this matchup

Starting items

Doran's Shield
Health Potion

Core build

Tear of the Goddess
1
Sundered Sky
2Bruiser
Fimbulwinter
3Survival

Standard

Boots of Swiftness
4vs Slow
Kaenic Rookern
5vs AP

Summoner spells

41285%
41415%

Anti AD

Plated Steelcaps
4vs AD
Thornmail
5vs Hybride
Unending Despair
vs AD
Randuin's Omen
vs AD
Dead Man's Plate
vs AD

Anti AP

Mercury's Treads
4vs CC
Kaenic Rookern
5vs AP
Spirit Visage
vs AP

Other options

Jak'Sho, The Protean
vs Hybride
100.0% WR1 games
ResolveResolve
Grasp of the UndyingGrasp of the Undying
Shield BashShield Bash
Second WindSecond Wind
OvergrowthOvergrowth
PrecisionPrecision
Presence of MindPresence of Mind
Last StandLast Stand
Adaptive ForceAdaptive ForceHealth

Power Spikes

Strength by game phase

Early (0-15)
Mid (15-30)
Late (30+)
PoppyPoppy
KassadinKassadin
Favorable
Favorable
Passive

Kassadin's abilities

Passive, spells and ultimate

Void Stone (P)

Kassadin takes reduced magic damage and ignores unit collision.

Cooldowns

Cooldowns by spell rank

LevelQWER
310s7s21s–
69s7s21s5s
98s7s21s5s
118s7s21s3.5s
168s7s19s2s
188s7s17s2s

Playing against Kassadin

How to counter and exploit weaknesses

1

Punish Kassadin VERY hard in early game (levels 1-5): he's one of the weakest champions at that stage.

2

AD champions in midlane counter him: his passive and Q shield only work against magic damage.

3

Do NOT let the game go to late game: a level 16 Kassadin with his items is nearly impossible to stop.

4

His R consumes a lot of mana when stacking — force him to use multiple Rs to drain his mana.

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