From Dragonlance Lexicon
Journey to Ravenloft
Voldra, and four others from Palanthas, journeyed to Ravenloft by means of a strange mist. Once there, a ruler of one of the domains captured him, and used his ability to perceive the world through his crystal to spy on others.
- Knight of the Black Rose (Novel) pgs 60-62, 128-134, 160