Meta X: Attack on Titan features the first crossover license for Meta X, allowing you to battle with Eren, Mikasa, Levi and more against your favorite DC superheroes. Fully compatible with previous Justice League and Green Lantern sets but can also stand alone for strictly Attack on Titan fans. Each booster box contains 24 packs. Every box includes 1 Cross Rare, 1 Actice Player Card, and 8 Foil Parallels. Every other box includes an Ultra Rare. There are 146 brand-new, booster-exclusive cards including 4 different powerful Cross Rare cards and 2 game-changing Ultra Rare cards in the set.