| UnnerveConspiracy: Take the Crown · 150 | Conspiracy: Take the Crown | 150 | Common | $0.12 |
| UnnerveUrza's Saga · 162 | Urza's Saga | 162 | Common | $0.15 |
| Unquenchable FuryBattle the Horde Tokens · 10 | Battle the Horde Tokens | 10 | Common | $0.49 |
| Unquenchable ThirstHour of Devastation · 53 | Hour of Devastation | 53 | Common | €0.04 |
| Unquenchable ThirstAmonkhet Remastered · 86 | Amonkhet Remastered | 86 | Common | — |
| Unravel the AetherPioneer Masters · 198 | Pioneer Masters | 198 | Common | — |
| Unruly CatapultWilds of Eldraine · 156 | Wilds of Eldraine | 156 | Common | €0.16 |
| Unruly MobInnistrad: Double Feature · 40 | Innistrad: Double Feature | 40 | Common | €0.08 |
| Unruly MobInnistrad · 39 | Innistrad | 39 | Common | €0.06 |
| Unruly MobInnistrad: Midnight Hunt · 40 | Innistrad: Midnight Hunt | 40 | Common | €0.04 |
| Unruly MobShadows over Innistrad · 47 | Shadows over Innistrad | 47 | Common | €0.03 |
| Unsanctioned Ancient JugglerUnfinity Sticker Sheets · 13 | Unfinity Sticker Sheets | 13 | Common | $1.15 |
| Unscrupulous AgentMurders at Karlov Manor · 109 | Murders at Karlov Manor | 109 | Common | €0.07 |
| Unseal the NecropolisMarch of the Machine · 128 | March of the Machine | 128 | Common | €0.07 |
| Unseal the NecropolisThe List Tokens · MOM-128 | The List Tokens | MOM-128 | Common | $0.15 |
| Unsettling TwinsDuskmourn: House of Horror · 38 | Duskmourn: House of Horror | 38 | Common | $0.12 |
| Unstable ExperimentMarvel Super Heroes Commander · 789 | Marvel Super Heroes Commander | 789 | Common | €0.14 |
| Unstable ExperimentMarvel's Spider-Man · 47 | Marvel's Spider-Man | 47 | Common | €0.08 |
| Unstable ExperimentThrough the Omenpaths · 45 | Through the Omenpaths | 45 | Common | — |
| Unstable MutationRevised Edition · 86 | Revised Edition | 86 | Common | $0.19 |
| Unstable MutationFourth Edition Foreign Black Border · 110 | Fourth Edition Foreign Black Border | 110 | Common | €0.22 |
| Unstable MutationFourth Edition · 110 | Fourth Edition | 110 | Common | €0.12 |
| Unstable MutationFifth Edition · 131 | Fifth Edition | 131 | Common | $0.19 |
| Unstable MutationArabian Nights · 22 | Arabian Nights | 22 | Common | $5.02 |
| Unstable MutationForeign Black Border · 86 | Foreign Black Border | 86 | Common | €0.21 |
| Unstable MutationSummer Magic / Edgar · 86 | Summer Magic / Edgar | 86 | Common | €275.00 |
| Unstable ObeliskWarhammer 40,000 Commander · 260 | Warhammer 40,000 Commander | 260 | Common | €0.17 |
| Unstable ObeliskWarhammer 40,000 Commander · 260★ | Warhammer 40,000 Commander | 260★ | Common | $2.35 |
| Unstable ObeliskCommander Masters · 416 | Commander Masters | 416 | Common | €0.15 |
| Unstable Robot DragonUnfinity Sticker Sheets · 47 | Unfinity Sticker Sheets | 47 | Common | €0.18 |
| Unstoppable OgreFoundations Jumpstart · 609 | Foundations Jumpstart | 609 | Common | €0.12 |
| Unstoppable OgreKamigawa: Neon Dynasty · 169 | Kamigawa: Neon Dynasty | 169 | Common | €0.04 |
| 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 | €0.10 |
| UnsummonClassic Sixth Edition · 103 | Classic Sixth Edition | 103 | Common | €0.13 |
| 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 |