Arthurian Legends is a standalone expansion set that adds more than 220 new cards for players to create new, epic stories. Booster boxes comprise 24 fifteen card booster packs. Each 15-card booster contains 11 ordinary cards, 3 exceptional cards, and 1 elite card, with a chance that cards could be replaced with a unique rarity card, foil of any rarity, and mysterious hidden curios. Due to manufacturing variations in product production, card rarities may vary from the stated composition for an individual booster packs and booster box.