Lighting Rod by Vaughn R. Demont
Sorcerers have always been feared in the City, their origins as unknown as the nature and extent of their power. When James Black, a young man fleeing an abusive lover, becomes a sorcerer, his old life is erased from existence, and his new life is indebted to powerful entities.
Escaping the man who abused him was supposed to be the end, but the very magic that freed him has put him on a collision course with the gods and the Sorcerer King himself.
And only one of them can survive.