This is a great build guide for Oriana. This is my 1st time creating a mobafire guide so please like this.

I get alot of ap off my runes for a nice early game and have that ap per lvl for alittle late game ap. Magic pen for more damage and to stack with my void staff.

All of my masters are on ap for damage and magic regen because Oriana is mana hungry.

All the items are on Cdr and ap.

My skill sequence is on commend attack for the poke ability.

Ignite and flash for escape and chase ability.

This is a great build. And just try to outfarm your enemy. Good Luck