Void Stone (Passive)
Kassadin takes reduced magic damage and ignores unit collision.
Null Sphere (Q)
Cooldown: 11/10.5/10/9.5/9
Cost: 70/75/80/85/90
Range: 650
Kassadin fires an orb of void energy that deals 65/95/125/155/185 (+0.7) magic damage and interrupts channels.The excess energy forms around himself, granting a shield that absorbs 40/70/100/130/160 (+0.3) magic damage for 1.5 seconds.
Nether Blade (W)
Cooldown: 7
Cost: 1
Range: 1
Passive: Kassadin's basic attacks draw energy from the void, dealing 20 (+0.1) bonus magic damage.Active: Kassadin charges his Nether Blade, causing his next basic attack to deal 70/95/120/145/170 (+0.8) bonus magic damage and restore 4/4.5/5/5.5/6% of his missing Mana (increases to 20/22.5/25/27.5/30% against champions).
Force Pulse (E)
Cooldown: 5
Cost: 60/65/70/75/80
Range: 400
Kassadin draws energy from spells cast in his vicinity, gaining a charge whenever a spell is cast near him.Upon reaching 6 charges, Kassadin can use Force Pulse to deal 80/105/130/155/180 (+0.8) magic damage and slow enemies by 50/60/70/80/90% for 1 second in a cone in front of him.
Riftwalk (R)
Cooldown: 5/3.5/2
Cost: 40
Range: 500
Kassadin teleports to a nearby location dealing 80/100/120 (+f 2) (+0.4) magic damage to surrounding enemy units.Each subsequent Riftwalk within the next 15 seconds doubles the Mana cost and deals an additional 40/50/60 (+f 1) (+f 3) magic damage per stack, stacking up to 4 times.