Summoner Spells:
Allways use flash.
You can use Ignite,Teleport or Barrier.
Ignite:
if you are agressive use it.
Teleport:
This is a great spell for azir, you can use it to roaming a lane or to defend a lane, you can use this spell to be agressive or defensive.
Barrier:
If you like to be defensive use this, and you can use this if you are going VS Talon.

My words:
Sorry for my bad english, and sorry if the build isnt correct beacuse im new on this,its my first build guide. SRRY :)