Yu-Gi-Oh! Trading Card Game Battle Kit 3: Sealed Play Battle Kit Box YuGiOh Battle Kit 3 Contains 10 Battle Pack 3: Monster League Booster Packs. 1 of 5 Battle Pack Game Mats (5 different designs to collect). Each Sealed Play Battle Kit comes with ten Battle Pack 3: Monster League Booster Packs and one of five featured Battle Pack Game Mats exclusive to the Yu-Gi-Oh! Every Battle Pack 3: Monster League pack contains 5 cards consisting of 1 Rare, 3 Commons, and 1 Shatterfoil a new card rarity that was only seen in the later Duel Terminal sets.