| Unite the CoalitionDominaria United Commander · 91 | Dominaria United Commander | 91 | Rare | €0.39 |
| UNIT HeadquartersDoctor Who · 604 | Doctor Who | 604 | Common | €0.21 |
| Unity of PurposeOath of the Gatewatch · 66 | Oath of the Gatewatch | 66 | Uncommon | €0.11 |
| Universal AutomatonModern Horizons 1 Timeshifts · 38 | Modern Horizons 1 Timeshifts | 38 | Uncommon | €0.20 |
| Universal AutomatonJumpstart 2022 · 803 | Jumpstart 2022 | 803 | Common | €0.42 |
| Universal AutomatonModern Horizons · 235 | Modern Horizons | 235 | Common | €0.38 |
| Universal AutomatonThe List Tokens · MH1-235 | The List Tokens | MH1-235 | Common | €0.37 |
| Universal AutomatonThe List Tokens · J22-803 | The List Tokens | J22-803 | Common | €0.54 |
| Universal AutomatonJumpstart: Historic Horizons · 759 | Jumpstart: Historic Horizons | 759 | Common | — |
| Universal AutomatonMagic Online Promos · 91381 | Magic Online Promos | 91381 | Rare | — |
| Universal SolventAether Revolt · 178 | Aether Revolt | 178 | Common | €0.02 |
| Universal SolventCommander Legends: Battle for Baldur's Gate · 342 | Commander Legends: Battle for Baldur's Gate | 342 | Common | €0.10 |
| Universal SolventCommander Legends · 347 | Commander Legends | 347 | Common | €0.03 |
| Universal SolventFoundations Jumpstart · 761 | Foundations Jumpstart | 761 | Common | €0.12 |
| Universal SolventJumpstart 2022 · 804 | Jumpstart 2022 | 804 | Common | €0.09 |
| Universal SolventThe List Tokens · AER-178 | The List Tokens | AER-178 | Common | €0.07 |
| Universal SolventKaladesh Remastered · 273 | Kaladesh Remastered | 273 | Common | — |
| Universal SurveillanceEdge of Eternities Commander · 81 | Edge of Eternities Commander | 81 | Rare | €0.19 |
| Universal SurveillanceNeon Dynasty Commander · 17 | Neon Dynasty Commander | 17 | Rare | $0.24 |
| Universal SurveillanceNeon Dynasty Commander · 54 | Neon Dynasty Commander | 54 | Rare | €0.33 |
| Universal SurveillanceMagic Online Promos · 97935 | Magic Online Promos | 97935 | Rare | — |
| Universal Surveillance // Universal SurveillanceNeon Dynasty Art Series · 27 | Neon Dynasty Art Series | 27 | — | — |
| University CampusMarvel's Spider-Man · 186 | Marvel's Spider-Man | 186 | Common | €0.11 |
| University CampusThrough the Omenpaths · 186 | Through the Omenpaths | 186 | Common | — |
| Unknown EventBlack Lotus Unknown Planechase · PLA010 | Black Lotus Unknown Planechase | PLA010 | Common | — |
| Unknown Event ShoresUnknown Event · CL01b | Unknown Event | CL01b | Common | $4.99 |
| Unknown ShoresOath of the Gatewatch · 181 | Oath of the Gatewatch | 181 | Common | €0.06 |
| Unknown ShoresTheros Beyond Death · 249 | Theros Beyond Death | 249 | Common | €0.05 |
| Unknown ShoresTheros · 229 | Theros | 229 | Common | €0.07 |
| Unknown ShoresIxalan · 259 | Ixalan | 259 | Common | €0.08 |
| Unlawful EntryUnfinity · 62 | Unfinity | 62 | Common | $0.03 |
| Unlawful EntryUnfinity · 348 | Unfinity | 348 | Common | $0.29 |
| Unleash FuryFoundations Jumpstart · 608 | Foundations Jumpstart | 608 | Uncommon | $0.41 |
| Unleash FuryCore Set 2021 · 170 | Core Set 2021 | 170 | Uncommon | $0.39 |
| Unleash FuryStarter Commander Decks · 166 | Starter Commander Decks | 166 | Uncommon | $0.46 |
| Unleash FurySecret Lair Drop Tokens · 7050 | Secret Lair Drop Tokens | 7050 | Rare | $1.47 |
| Unleash ShellThe Brothers' War · 155 | The Brothers' War | 155 | Common | €0.03 |
| Unleash the FluxDoctor Who · 605 | Doctor Who | 605 | Common | €0.24 |
| Unleash the InfernoStreets of New Capenna Promos · 229p | Streets of New Capenna Promos | 229p | Rare | €0.19 |
| Unleash the InfernoStreets of New Capenna Promos · 229s | Streets of New Capenna Promos | 229s | Rare | €0.27 |
| Unleash the InfernoStreets of New Capenna · 229 | Streets of New Capenna | 229 | Rare | €0.14 |
| Unleash the InfernoStreets of New Capenna · 337 | Streets of New Capenna | 337 | Rare | €0.17 |
| Unleash the InfernoStreets of New Capenna · 402 | Streets of New Capenna | 402 | Rare | €0.17 |
| Unlicensed DisintegrationDouble Masters · 224 | Double Masters | 224 | Uncommon | €0.13 |
| Unlicensed DisintegrationFriday Night Magic 2017 Tokens · 5 | Friday Night Magic 2017 Tokens | 5 | Rare | €0.14 |
| Unlicensed DisintegrationKaladesh · 187 | Kaladesh | 187 | Uncommon | $0.18 |
| Unlicensed DisintegrationStarter Commander Decks · 255 | Starter Commander Decks | 255 | Uncommon | €0.11 |
| Unlicensed DisintegrationThe List Tokens · KLD-187 | The List Tokens | KLD-187 | Uncommon | €0.12 |
| Unlicensed DisintegrationKaladesh Remastered · 211 | Kaladesh Remastered | 211 | Uncommon | — |
| Unlicensed DisintegrationMagic Online Promos · 64430 | Magic Online Promos | 64430 | Uncommon | — |