The Forgotten Realms answer to the Draconomicon.

Dragons of Faerūn features an in-depth look at the dragons of Forgotten Realms. Dungeon Masters are given information on adventuring in the Year of Rogue Dragons on specific dragons of Faerūn and how they may interact with or fight against the players. They are given information on organizations that players can belong to or work against, like the evil Cult of the Dragon. Also included is information on how to run a campaign that features the Year of Rogue Dragons, the one time every thousand years the dragons of Faerūn rampage across the continent.