The Red Sea by Edward W. Robertson

When Dante Galand was just a boy, his father Larsin sailed away to make his fortune. And never returned. Since then, Dante has become a great sorcerer. A ruler. A destroyer of kings. And he’s just learned that his father is living on a forbidden island at the edge of the known world.

Where he’s dying of a mysterious plague.

Dante is the only one who can save him. But when he arrives on the island, Dante’s hunt for a cure sends him on a crash course with the vicious raiders known as the Tauren—and threatens to plunge the whole island into civil war.