If you are going to replace "The Ultimate Hat" you may have to revert Malzahar nerfs
Considering that he was nerfed in the first place because of the Rune.
I want be be clear, i cannot stand Malzahar but i feeling of balance override that.
Edit: Specifically talking about the nether Grasp cooldown nerf in 8.2 since he can no longer take the ultimate hat.