Thorn Beast is a plug-and-play expansion that features a mythological, monstrous draconic beast from Trudvang that can be either a plague upon the land or a companion, a dragon-like creature that you can ride and soar across Trudvang with if you engage in bonding and taming it. Caring for a partially insane beast is a risky yet rewarding experience! As a modular expansion, Thorn Beast is compatible with any Adventure, whether the core box, Lost Story, or expansions. —description from the publisher