The Dark Castle Booster Set brings a whole new wave of Spiritkin to your BOO! Spirit Battles collection. Each set contains three Dark Castle booster packs loaded with new ghost creatures, one random holographic promo card from an exclusive series of twelve, and a Dark Castle Spirit Guide to help you learn every new ability. BOO! Spirit Battles is the fast-paced trading card game where players draft teams of Spiritkin, roll dice in head-to-head combat, and activate unique card abilities to outplay their opponents. Games play in under thirty minutes with two to five players, making it perfect for family game night, after-school play, or friendly tournaments. The rules are simple enough for ages eight and up, but the strategic combinations between Spiritkin abilities give experienced players plenty to explore. Dark Castle introduces spirits with dark and castle-themed powers that interact with existing cards in surprising ways. This is an expansion product. A BOO! Spirit Battles starter set such as Logic and Chaos or Friends and Foes is required to play. Add Dark Castle boosters to your starter set to grow your collection, strengthen your team, and gain an edge in every battle.