Kassadin

Kassadin gains bonus attack speed equal to 15% of magic damage taken.

Kassadin fires a void bolt, dealing 60/105/150/195/240 (+60% AP) magic damage and Silencing the target for 1/1.25/1.5/1.75/2 second(s).

Passive: Kassadin's basic attacks draw energy from the void, restoring 8/11/14/17/20 Mana each hit. If the target is an enemy champion, the Mana restored is tripled to 24/33/42/51/60. Active: Kassadin charges his nether blade for 5 seconds causing his basic attacks to deal an additional 30/45/60/75/90 (+30% AP) magic damage.

Kassadin draws energy from spells cast in his vicinity (1800 range), gaining a charge whenever a spell is cast near him. Upon reaching 6 charges, Kassadin can use Force Pulse to deal 60/120/180/240/300 (+80% AP) magic damage and Slow enemies by 20/30/40/50/60% for 3 seconds in a cone in front of him.

Kassadin teleports to a nearby location dealing 60/70/80 (+70% AP) magic damage to surrounding enemy units. Additionally, each subsequent Riftwalk within the next 8 seconds costs 100 additional Mana and deals 60/70/80 additional damage, stacks up to 10 times.