Azir can push waves way too fast without nearly no manacost.

Mana 351 – 1065

Conquering Sands RANGE: 800 COST: 70 mana COOLDOWN: 10 / 9 / 8 / 7 / 6

Arise! RANGE: 450 COST: 40 mana COOLDOWN: 1.5 Recharge Time: 12 / 11 / 10 / 9 / 8

Shifting Sands COST: 60 mana COOLDOWN: 19 / 18 / 17 / 16 / 15

Emperor's Divide RANGE: 250 COST: 100 mana COOLDOWN: 140 / 120 / 100

While his mana isn't the most restricting thing ever, it certainly has some thoughts in the management department I would think. And the cd too, they don't seem too spammy until a few points and items in.

So I wouldn't say he's that bad to deal with. But what do I know?

He can push hard yeah, but not unless your not harassing him and he's not trying to poke you can he do it without using a bunch of mana.