Problem with Cannibalize

Problem with Cannibalize

I want to make an undead hero wich consumes the body of their victims with just one click, so i made a ranged cannibalize ability with 1 sec duration and lots of HP healed per second

sounds cool huh? well... it doesn't work. If anyone finds a way to make it work please please please please tell me!!!

cannibalize is messed up. Try increasing the AOE