Changes for Azir.
Overall he needs buffed. His base damages are bad and he doesn't really have the safety that other mages have (some immobilizing type of cc on normal ability). Here are a few changes I have in mind.
Passive: I find it incredibly easy to accidentally cast a tower right after killing an enemy tower. Most of the time if I get the final auto attack on the tower, my tower will take it's place.
Q: Increase it's early damage but keeps it's late damage. His early damage is honestly garbage compared to other mages such as vel'koz and lux. Also, please for the love of god change the range indicator on this. It's super fucking annoying to q only for it not to hit an enemy even though the indicator says it would. I suggest doing two things: First, make the indicators for each soldier point to where they will actually go instead of just one point. Second, make the end of the indicators have the soldiers range on them. It would look like Fiora's q indicator. This is just for clarity because I can't tell you enough how many times i've used q to try to get a kill and not because they're just out of range of my soldier's attack.
W: Nothing much really. Increase base damage again. Like I said, he lacks it.
E: HE HAS NO MORE KNOCKUP ON HIS E FFS. Other mages get some type of immobilizing CC at a range. Azir gets a dash that is interrupted when he hits an enemy. This is his only real escape if he doesn't want to use his ult or pre 6. I thought it was really good and balanced. Why? The shield he gets from E isn't that large and the scaling on it is shit. Also, HE HAS TO GO INTO THE ENEMY TO DO IT.
R: Holy shit this is still buggy as hell. I mean, I've had a vayne take no damage and not get affected by the knockback from my ult because it would've trapped her on a wall. I don't know how many times i've pressed R in a teamfight only for it to not go off. What i'm suggesting to do with his ult is make it not come close enough to a wall for it to trap an enemy between it. However, make sure an enemy can't just hug a wall to avoid being hit by it. Make it hit the wall the bounce back enough so that the enemy won't get stuck but they will also be completely affected by the ult.
I know he has a shit ton of bugs. His title should be Emperor of the Bugs not the sand.
R or blinks like
E (and a couple other exceptions like
R being "unstoppable"
Regardless some weird stuff can happen. The most recent I saw was an Azir ulting as a Leona E'd him. Leona got knocked back by the wall but than E pulled her back through it to Azir anyways. (locked on and "targeted" once contact was made maybe?)
and getting mad burst off Q+1-2 AAs)