Crying Havoc (Five Kingdoms, #4)

The Five Kingdoms are in chaos. Armies march to war led by the Master of the Torr, a powerful wizard who will stop at nothing to bring Zollin, a young wizard from the northern kingdom of Yelsia, under his control. Meanwhile, a rogue sorceress is bewitching every man who sees her, each one pledging his life and death to her cause. She sends men north to find the young wizard and bring him into her army. As kings strive for greater power among the Five Kingdoms and magical beasts awaken across the land, Zollin, the Wizard of Yelsia, is nowhere to be found.