These mordekaiser nerfs are a joke; just like our game's balance team.

A small reduction on the movement speed and duration of his passive. This is nothing. His problems are his massive shield, crazy healing from runes, easy target access with ult, and very good damage through all the game. Yes, he has weaknesses, but they are very difficult to punish in most games. He needs a nerf to his shield or his reliablity of being good in teamfights, splitpushing, and skirmishes. He is too powerful. I would suggest a nerf to his shield or his Q AP scaling.