Calagainbor is an elf who came over from Viridor in the invasion but declined to settle in Belamir after the fall of Varkar. He wandered down the coast and settled in Tzallis, content to study his sorcery and assist the magistrate in exchange for being left in peace. When the dragon struck in 1913 he refused to fight it and withdrew to his tower, concealing it magically, though it still casts a shadow. 
The surviving population never forgave him, but fear has prevented any attempt to drive him out. He has not been seen outside his tower since, and is generally referred to as “the Black Wizard” or the “Craven Mage”.Around Baylock's height, and dressed in a fairly simple but elegant dark blue-grey robe, the newcomer was clearly an elf. His fine features, and the way light was always on his face gave that away, though his eyes had secretive depths to them. His chin had a trace of stubble, not a common thing for an elf.