Talk:Karthus/@comment-4499945-20120815025000/@comment-4184629-20120817035611

It's really just how much you have to be careful. Karthus can be strong, but you have to be paying constant attention and mistakes are much easier to punish him for. Other mids that have mobility and hard CC are preferable early and can remain powerful on into late game. Still, without a strong team behind him that can capitalize on his strengths he is way less useful (unlike something simpler like a huge burst or a hard stun on their carry.)