UE20BT: That Time I Got Reincarnated as a Slime Release Event Cards is a Union Arena set with 63 cards on its set list. Its most valuable cards by market price include Feast (096), Feast (056), and Luminus (093).
Prices as of Oct 12, 2026
| No. | Card | Rarity | Price |
|---|---|---|---|
| UEPR/TSK-1-004 | Diablo (004) | Uncommon | $3.51 |
| UEPR/TSK-1-008 | Youm | Uncommon | $3.90 |
| UEPR/TSK-1-009 | Ranga (009) | Uncommon | $2.30 |
| UEPR/TSK-1-011 | Rimuru (011) | Uncommon | $3.14 |
| UEPR/TSK-1-014 | Kurobei | Uncommon | $2.73 |
| UEPR/TSK-1-018 | Shuna (018) | Uncommon | $2.24 |
| UEPR/TSK-1-021 | Soei (021) | Uncommon | $2.20 |
| UEPR/TSK-1-022 | Hakuro | Uncommon | $5.19 |
| UEPR/TSK-1-025 | Benimaru (025) | Uncommon | $0.99 |
| UEPR/TSK-1-028 | Jura Tempest Federation | Uncommon | $0.26 |
| UEPR/TSK-1-030 | Feast (030) | Uncommon | $5.03 |
| UEPR/TSK-1-034 | Hell Flare | Uncommon | $2.66 |
| UEPR/TSK-1-035 | Veldora | Uncommon | $3.98 |
| UEPR/TSK-1-037 | Kaijin | Uncommon | $0.57 |
| UEPR/TSK-1-042 | Shizu (042) | Uncommon | $2.77 |
| UEPR/TSK-1-044 | Soka (044) | Uncommon | $4.50 |
| UEPR/TSK-1-046 | Treyni | Uncommon | $1.50 |
| UEPR/TSK-1-049 | Rigurd | Uncommon | $0.99 |
| UEPR/TSK-1-051 | Rimuru (051) | Uncommon | $2.61 |
| UEPR/TSK-1-057 | Shuna (057) · Normal | Uncommon | $1.93 |
| UEPR/TSK-1-057 | Shuna (Release Event Participant) · Normal | Uncommon | $0.30 |
| UEPR/TSK-1-057 | Shuna (Release Event Winner) · Foil | Uncommon | $4.52 |
| UEPR/TSK-1-061 | Great Forest of Jura | Uncommon | $0.49 |
| UEPR/TSK-1-062 | Feast (062) | Uncommon | $6.23 |
| UEPR/TSK-1-065 | Mystic Thread Strike | Uncommon | $6.21 |
| UEPR/TSK-1-072 | Beretta | Uncommon | $3.65 |
| UEPR/TSK-1-076 | Guy | Uncommon | $1.27 |
| UEPR/TSK-1-079 | Daggrull | Uncommon | $1.66 |
| UEPR/TSK-1-081 | Frey | Uncommon | $4.18 |
| UEPR/TSK-1-083 | Milim (083) | Uncommon | $3.63 |
| UEPR/TSK-1-087 | Ramiris | Uncommon | $2.65 |
| UEPR/TSK-1-092 | Rimuru (Lord of Wisdom) | Uncommon | $5.59 |
| UEPR/TSK-1-093 | Luminus (093) | Uncommon | $6.28 |
| UEPR/TSK-1-094 | Leon | Uncommon | $2.01 |
| UEPR/TSK-1-095 | Demon Lords' Banquet ~Walpurgis~ | Uncommon | $2.50 |
| UEPR/TSK-1-096 | Feast (096) | Uncommon | $6.61 |
| UEPR/TSK-1-098 | Lord of Gluttony | Uncommon | $4.02 |
| UEPR/TSK-1-106 | Rimuru (106) | Uncommon | $4.33 |
| UEPR/TSK-2-002 | Diablo (002) | Uncommon | $1.60 |
| UEPR/TSK-2-005 | Shion (005) | Uncommon | $1.60 |
| UEPR/TSK-2-008 | Soei (008) | Uncommon | $2.07 |
| UEPR/TSK-2-010 | Benimaru (010) | Uncommon | $1.80 |
| UEPR/TSK-2-015 | Shizu (015) | Uncommon | $6.00 |
| UEPR/TSK-2-020 | Shuna (020) | Uncommon | $1.60 |
| UEPR/TSK-2-022 | Benimaru (022) | Uncommon | $1.51 |
| UEPR/TSK-2-024 | Report | Uncommon | $5.11 |
| UEPR/TSK-2-029 | Soka (029) | Uncommon | $2.07 |
| UEPR/TSK-2-032 | Hinata | Uncommon | $4.06 |
| UEPR/TSK-2-036 | Mjollmile | Uncommon | $3.99 |
| UEPR/TSK-2-037 | Momiji | Uncommon | $2.18 |
| UEPR/TSK-2-038 | Yuuki | Uncommon | $4.00 |
| UEPR/TSK-2-039 | Ranga (039) | Uncommon | $5.00 |
| UEPR/TSK-2-040 | Louis | Uncommon | $2.63 |
| UEPR/TSK-2-043 | Rimuru (043) | Uncommon | $4.00 |
| UEPR/TSK-2-046 | Luminus (046) | Uncommon | $4.09 |
| UEPR/TSK-2-051 | Shion (051) | Uncommon | $2.98 |
| UEPR/TSK-2-056 | Feast (056) | Uncommon | $6.35 |
| UEPR/TSK-2-058 | Master Chef | Uncommon | $3.69 |
| UEPR/TSK-2-059 | Melt Slash | Uncommon | $4.30 |
| UEPR/TSK-2-065 | Milim (065) | Uncommon | $2.80 |
| UEPR/TSK-2-069 | Rimuru (069) | Uncommon | $3.74 |
| UEPR/TSK-2-071 | Luminus (071) | Uncommon | $5.23 |
| UEPR/TSK-2-073 | This Is So Good! | Uncommon | $4.00 |