The Twisting Trees

I consider Ahri to be one of the best if not the best mage on TT. This is due to the fact that I highly value pick comps on TT. It is very easy to land a charm after another friendly cc. She has sustain,poke, picks, and is a major play maker. 

Runes: http://imgur.com/QPxn0Qv

Build:

Yolo build: 2xdorans > Blackfire torch > pen boots  > Nomicon > Void staff > Witchcap >  Rylai's

Team fight: dorans flask potions > 2xnomicon > pen boots > witchcap > voidstaff > Rylai's or torch