The hit anime That Time I Got Reincarnated as a Slime joins UNION ARENA, arriving as the first Special Booster Pack for the English release. With nearly 200 cards featuring popular characters from Seasons 1 to 3, including Rimuru, Milim, Shizue, Shion, Benimaru, and Shuna, this is a dream item that lets players start building a variety of decks right away. Features a wide range of North America…