| Unstable ObeliskCrimson Vow Commander · 170 | Crimson Vow Commander | 170 | Uncommon | €0.11 |
| Unstable Robot DragonUnfinity Sticker Sheets · 47 | Unfinity Sticker Sheets | 47 | Common | €0.18 |
| Unstable ShapeshifterTempest · 100 | Tempest | 100 | Rare | €0.45 |
| UnstickerifyUnknown Event · UW01a | Unknown Event | UW01a | Uncommon | — |
| Unstoppable AshMorningtide · 137 | Morningtide | 137 | Rare | €0.46 |
| Unstoppable AshThe List Tokens · MOR-137 | The List Tokens | MOR-137 | Rare | $2.50 |
| Unstoppable OgreFoundations Jumpstart · 609 | Foundations Jumpstart | 609 | Common | €0.12 |
| Unstoppable OgreKamigawa: Neon Dynasty · 169 | Kamigawa: Neon Dynasty | 169 | Common | €0.04 |
| Unstoppable PlanAetherdrift · 72 | Aetherdrift | 72 | Rare | $1.47 |
| Unstoppable PlanAetherdrift · 382 | Aetherdrift | 382 | Rare | €2.31 |
| Unstoppable PlanAetherdrift · 442 | Aetherdrift | 442 | Rare | €5.27 |
| Unstoppable PlanAetherdrift Promos · 72p | Aetherdrift Promos | 72p | Rare | €1.55 |
| Unstoppable PlanAetherdrift Promos · 72s | Aetherdrift Promos | 72s | Rare | €2.57 |
| Unstoppable SlasherDuskmourn: House of Horror · 119 | Duskmourn: House of Horror | 119 | Rare | €3.33 |
| Unstoppable SlasherDuskmourn: House of Horror · 294 | Duskmourn: House of Horror | 294 | Rare | €4.21 |
| Unstoppable SlasherDuskmourn: House of Horror · 312 | Duskmourn: House of Horror | 312 | Rare | €3.20 |
| Unstoppable SlasherDuskmourn: House of Horror Promos · 119p | Duskmourn: House of Horror Promos | 119p | Rare | €2.55 |
| Unstoppable SlasherDuskmourn: House of Horror Promos · 119s | Duskmourn: House of Horror Promos | 119s | Rare | €4.93 |
| Unstoppable SlasherJapan Standard Cup · 2026-2 | Japan Standard Cup | 2026-2 | Rare | €4.00 |
| UnsubstantiateEldritch Moon · 79 | Eldritch Moon | 79 | Uncommon | €0.14 |
| UnsubstantiateCore Set 2021 · 82 | Core Set 2021 | 82 | Uncommon | €0.21 |
| UnsubstantiateEldritch Moon Promos Tokens · 79 | Eldritch Moon Promos Tokens | 79 | Uncommon | €0.24 |
| UnsubstantiateThe List Tokens · EMN-79 | The List Tokens | EMN-79 | Uncommon | $0.19 |
| UnsubstantiateSecret Lair Drop Tokens · 2158 | Secret Lair Drop Tokens | 2158 | Uncommon | €0.80 |
| UnsubstantiateMagic Online Promos · 61557 | Magic Online Promos | 61557 | Rare | — |
| Unsubtle MockerySecrets of Strixhaven · 136 | Secrets of Strixhaven | 136 | Common | €0.03 |
| UnsummonUnlimited Edition · 87 | Unlimited Edition | 87 | Common | $1.07 |
| UnsummonRevised Edition · 87 | Revised Edition | 87 | Common | $0.19 |
| Unsummon30th Anniversary Edition · 86 | 30th Anniversary Edition | 86 | Common | €0.61 |
| Unsummon30th Anniversary Edition · 383 | 30th Anniversary Edition | 383 | Common | €14.51 |
| UnsummonFourth Edition Foreign Black Border · 111 | Fourth Edition Foreign Black Border | 111 | Common | €0.73 |
| UnsummonTenth Edition · 122 | Tenth Edition | 122 | Common | $0.11 |
| UnsummonFourth Edition · 111 | Fourth Edition | 111 | Common | €0.09 |
| UnsummonClassic Sixth Edition · 103 | Classic Sixth Edition | 103 | Common | €0.11 |
| UnsummonFifth Edition · 132 | Fifth Edition | 132 | Common | €0.12 |
| UnsummonSeventh Edition · 108 | Seventh Edition | 108 | Common | €0.15 |
| UnsummonSeventh Edition · 108★ | Seventh Edition | 108★ | Common | $0.28 |
| UnsummonEighth Edition · 112 | Eighth Edition | 112 | Common | $0.08 |
| UnsummonEighth Edition · 112★ | Eighth Edition | 112★ | Common | $0.08 |
| UnsummonCollectors' Edition · 87 | Collectors' Edition | 87 | Common | €1.27 |
| UnsummonIntl. Collectors' Edition · 87 | Intl. Collectors' Edition | 87 | Common | €3.22 |
| UnsummonConflux · 37 | Conflux | 37 | Common | €0.11 |
| UnsummonDuels of the Planeswalkers · 17 | Duels of the Planeswalkers | 17 | Common | €0.16 |
| UnsummonExplorers of Ixalan Tokens · 13 | Explorers of Ixalan Tokens | 13 | Common | $0.13 |
| UnsummonForeign Black Border · 87 | Foreign Black Border | 87 | Common | €0.35 |
| UnsummonFoundations · 599 | Foundations | 599 | Common | €0.17 |
| UnsummonFoundations · 750 | Foundations | 750 | Common | €0.20 |
| UnsummonHour of Devastation · 54 | Hour of Devastation | 54 | Common | $0.13 |
| UnsummonIntroductory Two-Player Set · 14 | Introductory Two-Player Set | 14 | Common | €0.11 |
| UnsummonLimited Edition Alpha · 86 | Limited Edition Alpha | 86 | Common | €49.04 |