If there's still room in this game, I am considering a fallen anti-paladin/oracle. Using the Posessed Oracle Archetype from UM if that's allowed - with the Tongues curse.
The general backstory being that she was sent to desecrate a good temple, and ended up being possessed by an avatar of the temple's deity. All of the constant acts of good have made her lose her anti-paladin abilities, and the longer she is possessed the more the goodness rubs off on her - she is Neutral at the moment and will become Good as she levels.