Step Into a New World of Strategy with Union Arena Slime Special Booster Box

Enter the world of monsters, magic, and evolving power with the Union Arena TCG That Time I Got Reincarnated as a Slime Special Booster Box [UE20BT]. Bringing Seasons 1 through 3 of the hit anime into Union Arena, this set delivers an expansive card pool packed with fan-favorite characters and dynamic gameplay options.

Designed as a high-volume special booster, this release combines two Japanese volumes into one massive English product. With four playable colors, exclusive North America foil-stamped autograph cards, and ultra-rare handwritten autograph AP cards, it’s a must-have for collectors and competitive players alike.

Because reincarnation is just the beginning of your strategy…

Features

• Includes 16 booster packs from the UE20BT Special Booster set with a large volume of cards per pack.
• Features characters from Seasons 1–3 of That Time I Got Reincarnated as a Slime in one combined release.
• Supports four colors, allowing for diverse deck-building strategies and playstyles.
• Includes North America exclusive foil-stamped autograph cards and extremely rare handwritten autograph AP cards.