Hi, I like Azir and his ability to bully lanes. In bot lane I found that you can get some good harrass off during an adc's attempt to cs.

My build atm is 7/0/23. and a rune page with ap quints, armor marks seals and scaling mr glyphs.

Core so far is.

Spellthief -> sightstone -> upgrade to frostfang/boots -> Rylai's -> sorcs-> Nasor's ->Frostqueen's

At this point I have 40% cdr from items masteries.

Theory part

Rabadon's if ahead?

Void staff for more magic pen?

Or build tanky to max his survivability?

Also personally nashor's seems a must to get more aa's off while building ap cdr, and Azir's autos still benefit from the passive which help him in the occasion you need to aa with no soldiers in range.