The Kingdoms: Wrath of Ashar  (The Book of the Kingdoms)
In the north, a fire rages through the world-spanning forest of  Beltrevan.  Out of the flames is born terrifying being with monstrous  powers--Taws, messenger of the fire-god Ashar.  The ancient prophecies  say he will raise a great Horde from the warlike tribes of the north to  bring destruction to the peaceful Kingdoms of Tamur, Ust-Galich, and  Kesh.  In the south, a young prophetess of the order of the lady  forsakes her vows of celibacy to bear a child, for the Book of Kyrie  says that a champion will arise from Tamur to meet the challenge of the  Usurper.  The boy is named Kedyrn.  And as he nears manhood it seems  that he may indeed be the child of prophecy, for he wields powers that  none outside the Sisterhood have ever claimed.  He may be the last,  desperate hope for the survival of the Kingdoms--but the Usurper has  learned of Kedryrn as well, and his armies are on the march . . . .