Sunrunner's Fire: Melanie Rawn

Book III of Dragon Prince series. Somewhere in the deep past, at the very edge of Sunrunner memory, lay an invisible, sinister force that once came close to obliterating the Sunrunner race. Now it was gaining power again. The Sunrunners put their faith in Andry, their new Lord and Sioned, the High Priestess. As they ride the sunlight they realise that the time has come to call down a fire that even the oldest enemy will fear. Cover art by Michael Whelan.