The Dragon & Wizards of Catan

Living deep within the scorched wastes of the desert lies the bane of all civilizations: The Dragon of Catan. The fearsome beast sleeps quietly upon the top of its hoard, sometimes. But from time to time the Dragon wakes. Then the monster rampages across the island, laying waste to all in his path. To combat this monster each of the civilizations has recruited a wizard to protect the realm and hopefully destroy the beast. The wizards harvest spell components from around the island, preparing to defend their land, kill the dragon, and perhaps hinder a few neighbors in his spare time. Touring the island is a roving band of gypsies. Seeking wealth, the are always willing to trade spell components for the right price.

—description from the rulebook