Cleanse is a good option on Azir as well if you are facing opponents like Zed, or someone who has a lot of cc in their kit, it can also remove the effects of ignite so if you are scared you could be bursted down with ignite, you can cleanse it away. Heal isn't optimal on Azir because most other matches take ignite which removes about half of the heals potential, Barrier is nice, but you need to time it right. Tbh Cleanse, Barrier and Flash should be used on him, anything else is kinda suboptimal