john!
Smash Hero
so why isn't karthus used much in top elo? what is holding him back? i've been wrecking with him lately and he might be my new best champ. he's like a better anivia... more aoe damage, more single target damage over time, a better wall, and a passive that also punishes enemies for focusing you first in a team fight... with no cooldown. his damage and farming are ridiculous.