Black Trillium — Marion Zimmer Bradley; Julian May

Three fan-favorite authors present “a classic fantasy quest involving mysterious wizards, rites of passage, and the salvation of a kingdom” (Library Journal).

Peace has long reigned in Ruwenda thanks to the magical protection of the Archimage Binah. The realm's devoted guardian is aging, however, and her magic is weakening. When the kingdom's triplet princesses were still infants, Binah gave each of them the mystical power of the Black Trillium. But the unthinkable occurs too soon, and Ruwenda is overrun by the ravaging armies of neighboring Labornok before the sisters, Haramis, Kadiya, and Anigel, have time to learn how to use their great gift.
 
Forced to flee, the young princesses must follow their separate destinies through a dangerous and unfamiliar world of Oddlings and enemies -- for only the combined power of three magical talismans can help them defeat the malevolent sorcerer who has brought chaos and death to their once-idyllic home. But it will take new kinds of strength and wisdom to confront the great evil that has descended on the World of the Three Moons.
 
Marion Zimmer Bradley, Julian May, and Andre Norton, three of the most honored names in fantasy fiction, have joined forces to create an extraordinary world and culture in the first book of the remarkable Saga of the Trillium, a breathtaking tale of duty, peril, love, and magic.