Magician: Master (Riftwar Cycle: The Riftwar Saga #2)

He held the fate of two worlds in his hands…
Once he was an orphan called Pug, apprenticed to a sorcerer of the enchanted land of Midkemia.. Then he was captured and enslaved by the Tsurani, a strange, warlike race of invaders from another world.
There, in the exotic Empire of Kelewan, he earned a new name–“Milamber. He learned to tame the unimagined powers that lay within him. And he took his place in an ancient struggle against an evil Enemy older than time itself.