[Baalz]

Hmmm, I'd have to go with MA Arcoscephale. With those parameters you're going to have to pick a good long term strategy so I'd go with good scales, strong research and expand early on the backs of elephants while castling up and cranking out the mystics. Strong communions & ability to heal afflictions on SC will carry you through the mid game, then strong astral magic (& good scales) will give you a good presence in the very long late game. You've got enough magic variety to handle anything, and great astral mages which will be brutal in the late game.