Each Build & Battle Box includes four Scarlet & Violet—Destined Rivals booster packs and a 40-card ready-to-play deck featuring key cards from current and prior sets as well as one of four unique foil promo cards. Depending on which promo card you get, you could be playing with the fiery Ethan’s Typhlosion, the destructive Misty’s Gyarados, the nefarious Team Rocket’s Tyranitar, or the Tera-countering Team Rocket’s Mimikyu.