High Deryni

The battle has been brutal and bloody, with scores of knights, rebels and warhorses killed. Toreth, the evil sorcerer-king, promises to spare the hostages taken in the battle, if Kelson, the newly crowned boy-king of Gwynedd, joins him - Deryni against Deryni - in a duel by magic to the death.
 
The battle has been brutal and bloody, with scores of knights, rebels and warhorses killed. Toreth, the evil sorcerer-king, promises to spare the hostages taken in the battle, if Kelson, the newly crowned boy-king of Gwynedd, joins him - Deryni against Deryni - in a duel by magic to the death.