Matchup

Heavy AP damageHigh burstDive threatSplit push

Build vs Kassadin

Build adapted to this matchup

Starting items

Doran's Blade
Health Potion

Core build

Sundered Sky
1Bruiser
Black Cleaver
2vs Tank
Death's Dance
3vs AD

Standard

Boots of Swiftness
4vs Slow
Eclipse
5DPS

Summoner spells

41495%
4125%

Anti AD

Plated Steelcaps
4vs AD
Guardian Angel
5vs AD

Anti AP

Mercury's Treads
4vs CC
Maw of Malmortius
5vs AP

Anti Tank

Youmuu's Ghostblade
5vs Tank
Serpent's Fang
vs Tank

DPS

Eclipse
DPS
Spear of Shojin
Bruiser

Other options

Sterak's Gage
Survival
100.0% WR1 games
PrecisionPrecision
Press the AttackPress the Attack
Presence of MindPresence of Mind
Legend: HasteLegend: Haste
Last StandLast Stand
SorcerySorcery
TranscendenceTranscendence
ScorchScorch
Adaptive ForceAdaptive ForceHealth Scaling

Power Spikes

Strength by game phase

Early (0-15)
Mid (15-30)
Late (30+)
PantheonPantheon
KassadinKassadin
Aggressive
Neutral
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