http://www.surrenderat20.net/2016/07/718-pbe-update.html
Void Shift (Passive)
Linger after taking damage or blocking cc effect reduced to .25 second from 1 second
Cooldown changed to 30/24/18/12 from 30/18/10/6
lol that's the joke, they plan to do that AFTER nerfing everything that wasn't causing him to be overpowered beforehand
If this causing to much of a nerf, they can always re-buff his Q and E.
If they nerf the core part of his kit, there isn't a point in picking him and he loses his identity if his core mechanic is not strong.