Matchup

Heavy AP damageHigh burstDive threatSplit push

Build vs Kassadin

Build adapted to this matchup

Starting items

Doran's Ring
Health Potion
x2

Core build

Hextech Rocketbelt
1Mage tank
Riftmaker
2Mage tank
Dead Man's Plate
3vs AD

Standard

Boots of Swiftness
4vs Slow
Heartsteel
5Survival

Summoner spells

41275%
41420%

Anti AD

Plated Steelcaps
4vs AD
Jak'Sho, The Protean
5vs Hybride
Unending Despair
vs AD
Randuin's Omen
vs AD

Anti Heal

Thornmail
6vs Hybride

Anti AP

Mercury's Treads
4vs CC
Hollow Radiance
5vs AP

Other options

Heartsteel
Survival
100.0% WR3 games
DominationDomination
Hail of BladesHail of Blades
Cheap ShotCheap Shot
Grisly MementosGrisly Mementos
Ultimate HunterUltimate Hunter
SorcerySorcery
Axiom ArcanistAxiom Arcanist
CelerityCelerity
Adaptive ForceMove SpeedHealth Scaling

Power Spikes

Strength by game phase

Early (0-15)
Mid (15-30)
Late (30+)
ChogathChogath
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