The last Herald-Mage : a Valdemar omnibus
(Book)

Though Vanyel has been born with near-legendary abilities to work both Herald and Mage magic, he wishes to become a Bard. Yet such talent as his, if left untrained, may prove a menace not only to Vanyel but to others as well. So he is sent to be fostered with his aunt, Savil, one of the fame Herald-Mages of Valdemar. Soon he will become the focus of frightening forces, lending his raw magic to a spell that unleashes terrifying wyr-hunters on the land. And by the time Savil seeks the assistance of a Shin'a'in Adept, Vanyel's wild talent may have already grown beyond anyone's ability to contain, placing Vanyel, Savil, and Valdemar itself in desperate peril.