Talk:Karthus/@comment-76.127.179.18-20120831020812

Plus you can no longer reduce mr below zero (specifically, wall will no longer help at all against blue). Plus the armor reduction is completely gone, which is a huge nerf to his usefulness during ganks and late-game teamfights.

Wall is now just a slow. Period. A short aoe slow that only applies once and starts to decay immediately.

It doesn't make Karthus bad, but he won't be fun anymore.