The Burning White (Lightbringer Series #5)

Gavin Guile, once the most powerful man the world had ever seen, has been laid low. He's lost his magic, and now he is on a suicide mission. Failure will condemn the woman he loves. Success will condemn his entire empire. As the White King springs his great traps and the Chromeria itself is threatened by treason and siege, Kip Guile must gather his forces, rally his allies, and scramble to return for one impossible final stand. For more from Brent Weeks, check out: (omnibus)