Talk:Kha'Zix/@comment-89.164.249.41-20130108031437/@comment-3308937-20130108193350

"A specific enemy unit can only take damage once from each cast of Void Spike. Similarly, Kha'Zix may only benefit from the heal once per cast."

http://leagueoflegends.wikia.com/wiki/Kha%27Zix/Ability_Details