That Time I Got Reincarnated as a Slime joins UNION ARENA as the first-ever English Special Booster! Featuring nearly 200 card types spanning Seasons 1–3 with fan-favorite characters including Rimuru, Milim, Shizue, Shion, Benimaru, and Shuna.
Contents:
- 1 Display = 16 Booster Packs
- 1 Pack = 12 Cards
- 4 rarities (Common / Uncommon / Rare / Super Rare) plus alternate-art cards
- North America-exclusive foil-stamped voice-cast autograph cards
- Ultra-rare serial-numbered handwritten autograph Action Point cards
