Introduce gem dragons in the fifth edition! Reveals the history of the First World and the roles Bahamut and Tiamat played in its creation and destruction. Adds new options for player characters, including unique draconic lineages for dragonborn, dragon-related subclasses for monks and rangers, and new feat and spell options. Provides everything any Dungeon Master needs to create dragon-inspired adventures in any D&D world, with new maps of their lairs and details on 20 different types of dragons. Features a complete dragon bestiary and introduces several new dragons and creatures related to them, including aspects of dragon gods, dragon minions, and much more.