The Obsidian Oracle: Dungeons & Dragons: Dark Sun: Prism Pentad, Book 4 (Unabridged‪)‬

Join the quest for an ancient oracle! Tithian of Tyr seeks the Dark Lens so that he can become the next sorcerer king. Agis needs the Dark Lens to destroy the Dragon of Athas. Before either can lay hands on it, they will have to settle their long-standing hatred of each other.

Sixteen years after it was first published, The Obsidian Oracle is as fresh and exciting as it ever was. Join a new generation of fantasy fans as they rediscover the sword and sorcery adventure of the Dark Sun world!