Union Arena UE20BT: That Time I Got Reincarnated as a Slime – prices and most valuable cards
UE20BT: That Time I Got Reincarnated as a Slime is a Union Arena set released on June 26, 2026. Our database lists 267 cards (set code: UE20BT).
Key facts
| Game | Union Arena |
|---|---|
| Release | June 26, 2026 |
| Code | UE20BT |
| Card count | 267 |
Most valuable UE20BT: That Time I Got Reincarnated as a Slime cards
| # | Card | No. | Rarity | Variant | Price |
|---|---|---|---|---|---|
| 1 | Luminus (048) (SR**) | UE20BT/TSK-2-048 | Super Rare 2-Star | Foil | $329 |
| 2 | Hinata (034) (SR**) | UE20BT/TSK-2-034 | Super Rare 2-Star | Foil | $324 |
| 3 | Milim (085) (SR**) | UE20BT/TSK-1-085 | Super Rare 2-Star | Foil | $311 |
| 4 | Rimuru (044) (SR**) | UE20BT/TSK-2-044 | Super Rare 2-Star | Foil | $293 |
| 5 | Shion (053) (SR**) | UE20BT/TSK-2-053 | Super Rare 2-Star | Foil | $277 |
| 6 | Rimuru (107) (Box Topper Gold Foil) | UE20BT/TSK-1-107 | Super Rare 1-Star | Foil | $273 |
| 7 | Shuna (007) (SR**) | UE20BT/TSK-2-007 | Super Rare 2-Star | Foil | $225 |
| 8 | Rimuru (091) (SR**) | UE20BT/TSK-1-091 | Super Rare 2-Star | Foil | $220 |
| 9 | Benimaru (027) (SR**) | UE20BT/TSK-1-027 | Super Rare 2-Star | Foil | $194 |
| 10 | Shizu (043) (SR**) | UE20BT/TSK-1-043 | Super Rare 2-Star | Foil | $192 |
TCGplayer market prices (US market) as of October 29, 2026 — for each card, its most expensive variant (e.g. holo, 1st Edition). Prices change daily and depend on condition — check the current price of a specific card and version in RipWorth.
Rarities in this set
| Rarity | Cards |
|---|---|
| Common | 79 |
| Uncommon | 61 |
| Rare | 38 |
| Super Rare | 22 |
| Rare 1-Star | 20 |
| Action Point | 13 |
| Super Rare 1-Star | 12 |
| Super Rare 2-Star | 11 |
| Uncommon 1-Star | 6 |
| Super Rare 3-Star | 2 |
| Action Point 1-Star | 2 |
| Common 1-Star | 1 |
FAQ
How many cards are in UE20BT: That Time I Got Reincarnated as a Slime?
RipWorth’s database lists 267 numbered cards in UE20BT: That Time I Got Reincarnated as a Slime (sealed products excluded).
When was UE20BT: That Time I Got Reincarnated as a Slime released?
UE20BT: That Time I Got Reincarnated as a Slime was released on June 26, 2026.
What is the most valuable card in UE20BT: That Time I Got Reincarnated as a Slime?
Based on TCGplayer market prices as of October 29, 2026, the most valuable card is Luminus (048) (SR**) (UE20BT/TSK-2-048, Super Rare 2-Star) at about $329. Prices change daily.
All sets: Union Arena · Union Arena is a trademark of its owner; RipWorth is not affiliated with it.