
Passive
Void Stone
Kassadin takes reduced magic damage and ignores unit collision.

the Void Walker
Riot Data Dragon 16.20.1. Base values before items, runes and bonuses; independent of match-data filters.
Official short descriptions · Data Dragon 16.20.1
Base-game reference only. Item, rune and mode-specific adjustments are not included.
This reference covers the passive and four ability slots. Alternate forms and full damage calculations are not covered.

Passive
Kassadin takes reduced magic damage and ignores unit collision.

Q
Kassadin fires an orb of void energy at a target, dealing damage and interrupting channels. The excess energy forms around himself, granting a temporary shield that absorbs magic damage.
Base values from ability rank 1 upward.

W
Passive: Kassadin's basic attacks deal bonus magic damage. Active: Kassadin's next basic attack deals significant bonus magic damage and restores Mana.
Base values from ability rank 1 upward.

E
Kassadin draws energy from spells cast in his vicinity. Upon charging up, Kassadin can use Force Pulse to damage and slow enemies in a cone in front of him.
Base values from ability rank 1 upward.

R
Kassadin teleports to a nearby location dealing damage to nearby enemy units. Multiple Riftwalks in a short period of time cost additional Mana but also deal additional damage.
Base values from ability rank 1 upward.
This champion is not included in the synthetic stats sample. Changing filters will not create a build or matchup record.
No verified professional match data is connected. Sample builds are not professional recommendations.