The reasoning behind the E change on Azir is disgusting.
https://www.reddit.com/r/leagueoflegends/comments/5iqnf9/1216_pbe_update/dbabshw/
TL;DR: Its bugged, so we removed it. You are left with an ability with shit Hp scaling no scaling.
E is kind of a shit ability now. It's a gap closer/mobility spell that is reliant on using all CD's except Ult. To use it aggressively requires you to use your ult or you die almost instantly in most cases.
Where is the satisfaction on Azir's E in his kit and why are we left with a non-standalone spell with no scaling stat on a hyper carry.
I can't find the logic here.