The Prestimion Trilogy: Sorcerers of Majipoor, Lord Prestimion, and The King of Dreams - Robert Silverberg

The epic sci-fi fantasy Majipoor Cycle continues with the saga of Lord Prestimion, whose rise to power is beset by war and madness.
Hugo and Nebula Award–winning author Robert Silverberg returns to the richly imagined world of Majipoor. Collected here in one volume is the complete Prestimion Trilogy, set hundreds of years before the events of the first three novels.
In Sorcerers of Majipoor, a peaceful transfer of power is threatened by a cunning rival to the throne. In Lord Prestimion, peace returns to Majipoor, but at a terrible price. And in King of Dreams, Prestimion prepares to ascend to the role of Pontifax as a plague of nightmares spreads across the planet.