Tales of the Timuras Series by Allan Cole

King of Kings, Lord over Men and Demons Alike: Only one ruler had ever held that title, and now Iraj Protarus, an orphaned prince exiled to a small village high in the Valley of the Clouds, dreamed of being the next great conqueror. The key to his destiny would be Safar Timura, a youth with an awesome gift for sorcery, whose visions foretold Iraj's rise to power. And in those visions, Safar stood at Iraj's side, his soul-blasting spells enabling his friend to attain his dreams... moreKing of Kings, Lord over Men and Demons Alike: Only one ruler had ever held that title, and now Iraj Protarus, an orphaned prince exiled to a small village high in the Valley of the Clouds, dreamed of being the next great conqueror. The key to his destiny would be Safar Timura, a youth with an awesome gift for sorcery, whose visions foretold Iraj's rise to power. And in those visions, Safar stood at Iraj's side, his soul-blasting spells enabling his friend to attain his dreams. But Safar had other visions with darker portents, and his spellbound knowledge raised secrets better left buried. The road the two men followed would be rich in titles and fortunes, but it would also be rich in death and disaster, in intrigue—and in unforgivable betrayal ... less

A nameless evil stalks the land, preying on all that lives, human and demon alike. Only one man has the power to stem the ravening tide: Safar Timura, greatest wizard of the age, whose matchless magic once raised Iraj Protarus to the throne of all Esmir ... and then, when king turned tyrant, destroyed him. Now Safar is done with the deadly intrigues of courts and kings. Back in his mountain home of Kyrania, he wants only to be left alone... moreA nameless evil stalks the land, preying on all that lives, human and demon alike. Only one man has the power to stem the ravening tide: Safar Timura, greatest wizard of the age, whose matchless magic once raised Iraj Protarus to the throne of all Esmir ... and then, when king turned tyrant, destroyed him. Now Safar is done with the deadly intrigues of courts and kings. Back in his mountain home of Kyrania, he wants only to be left alone. But when a brutal murder smashes his solitude, Safar must lead his people on a desperate trek to safety--a perilous journey to fabled, far-off Syrapis guided only by a magical vision and the words of a sorcerer long dead. The road leads straight through dark Caluz, a once-proud land now fallen beneath the sorcerous yoke of an unspeakable darkness. But there is no going back. Close at Safar's heels another evil follows like a rapacious wolf: Iraj Protarus. For the King of Kings has returned from the dead, hideously transformed--and thirsting for Safar's blood. less

Wizard Safar Timura is trapped in the doomed world of Hadin, condemned to suffer and die over and over again. It's up to his wizard son, Palimak, to stop the disaster and free Safar by confronting the Demon Moon.