Wild Magic

When the First Gods created all things, they brought forth two lesser gods, Tharn and Balatur, to walk upon the new world. But greed and power twisted their minds and turned their ambition into madness. And so the First Gods condemned them to eternal sleep in order to preserve creation.
Now, the exiled prince Calandryll, the mercenary Bracht, and the warrior woman Katya pursue Rhythamun, a powerful wizard who would wake one of the mad gods and provoke apocalypse. He carries with him the Arcanum, an ancient book of power that , simply by virtue of having been discovered , already stirs the god from his slumber.
But Calandryll and his companions are chased by another vengeful mage, whose dark magics created Cennaire, an undead murderess, to thwart their efforts. And as they face the perils of civil war, magical assaults, and the ever-present threat of Cennaire's treachery to reach Rhythamun before he wakes the god, they live with the knowledge that the fate of the world rests solely in their hands.
Wild Magic is the dazzling conclusion to The Godwars, an epic quest of daring heroism and startling magic by one of the rising stars in the fantasy firmament.
From the acclaimed author of The Books of the Kingdoms comes the concluding volume in the spectacular Godwars trilogy. In this epic quest of daring heroism and startling magic, exiled prince Calandryll and his comrades pursue a powerful wizard who would use an ancient book of power to wake one of the mad gods. Original.