Catacombs: Wyverns of Wylemuir

Description from the publisher:

Wyverns of Wylemuir is an expansion for Catacombs Third Edition and Catacombs & Castles. Defend the magic land of Wylemuir by riding the Wyverns that live there. The set includes eight Wyverns enabling characters such as heroes and monsters to ride them and unlock their powers. New heroes, monsters, items, rooms and warriors complement a double-side game board featuring a wooded meadow on one side and a dangerous swamp on the other. Finally new area of effect templates add new strategic elements to both base games.