Merlin Book 3: The Raging Fires
The Raging Fires is a fantasy novel by T. A. Barron originally published by Penguin in 1998. "The Raging Fires" is the third book in a 12-book series known as The Merlin Saga. This book was originally published as "The Fires of Merlin", book three of "The Lost Years of Merlin" epic, a 5-book series providing a childhood story for the legendary Merlin, wizard of Arthurian legend. Wings of Fire, the once-sleeping dragon, now threatens Fincayra with his raging fury. Merlin, whose magical powers are new and unproven, is the only  one who can stop him - though it could cost the young wizard his life. Before facing the dragon's fires, Merlin must confront several others: the dreaded kreelixes, who live to devour magic; the mysterious Wheel of Wye; the sorceress Domnu, who holds the treasured Galator; and perhaps most importantly and most challenging, those fires within himself.