| Unyielding GatekeeperMurders at Karlov Manor Promos · 35p | Murders at Karlov Manor Promos | 35p | Rare | €0.19 |
| Unyielding GatekeeperMurders at Karlov Manor Promos · 35s | Murders at Karlov Manor Promos | 35s | Rare | €0.42 |
| UpheavalModern Horizons 2 · 270 | Modern Horizons 2 | 270 | Rare | €0.25 |
| UpheavalOdyssey · 113 | Odyssey | 113 | Rare | €4.57 |
| UpheavalWorld Championship Decks 2002 Tokens · cr113 | World Championship Decks 2002 Tokens | cr113 | Rare | €0.69 |
| UpwellingTenth Edition · 306 | Tenth Edition | 306 | Rare | €0.46 |
| UpwellingTenth Edition · 306★ | Tenth Edition | 306★ | Rare | €0.33 |
| UpwellingScourge · 131 | Scourge | 131 | Rare | €0.45 |
| Urabrask's ForgePhyrexia: All Will Be One · 153 | Phyrexia: All Will Be One | 153 | Rare | $1.36 |
| Urabrask's ForgePhyrexia: All Will Be One · 387 | Phyrexia: All Will Be One | 387 | Rare | $1.47 |
| Urabrask's ForgePhyrexia: All Will Be One Promos · 153p | Phyrexia: All Will Be One Promos | 153p | Rare | €1.36 |
| Urabrask's ForgePhyrexia: All Will Be One Promos · 153s | Phyrexia: All Will Be One Promos | 153s | Rare | €1.64 |
| Urban RetreatMarvel's Spider-Man Promos · 187s | Marvel's Spider-Man Promos | 187s | Rare | $2.19 |
| Urban RetreatMarvel's Spider-Man · 187 | Marvel's Spider-Man | 187 | Rare | $0.54 |
| Urban RetreatMarvel's Spider-Man · 283 | Marvel's Spider-Man | 283 | Rare | $0.64 |
| Urban RetreatThrough the Omenpaths · 187 | Through the Omenpaths | 187 | Rare | — |
| UrborgTales of Middle-earth Commander · 519 | Tales of Middle-earth Commander | 519 | Rare | €26.31 |
| Urborg JusticeWeatherlight · 84 | Weatherlight | 84 | Rare | €2.48 |
| Urborg LhurgoyfDominaria United · 186 | Dominaria United | 186 | Rare | €0.24 |
| Urborg LhurgoyfDominaria United · 420 | Dominaria United | 420 | Rare | €0.30 |
| Urborg LhurgoyfDominaria United Promos · 186p | Dominaria United Promos | 186p | Rare | $0.17 |
| Urborg LhurgoyfDominaria United Promos · 186s | Dominaria United Promos | 186s | Rare | $0.57 |
| Urborg LhurgoyfMagic Online Promos · 103454 | Magic Online Promos | 103454 | Rare | — |
| Urborg MindsuckerMultiverse Gift Box · 5 | Multiverse Gift Box | 5 | Rare | €9.54 |
| Urborg ScavengersMarch of the Machine: The Aftermath · 15 | March of the Machine: The Aftermath | 15 | Rare | $0.28 |
| Urborg ScavengersMarch of the Machine: The Aftermath · 65 | March of the Machine: The Aftermath | 65 | Rare | $0.48 |
| Urborg ScavengersMarch of the Machine: The Aftermath · 115 | March of the Machine: The Aftermath | 115 | Rare | $0.37 |
| Urborg ScavengersMarch of the Machine: The Aftermath · 158 | March of the Machine: The Aftermath | 158 | Rare | $0.29 |
| Urborg ScavengersMarch of the Machine: The Aftermath · 199 | March of the Machine: The Aftermath | 199 | Rare | $2.21 |
| Urborg StalkerWeatherlight · 85 | Weatherlight | 85 | Rare | $0.88 |
| Urborg, Tomb of YawgmothMagic 2015 · 248 | Magic 2015 | 248 | Rare | €35.38 |
| Urborg, Tomb of YawgmothPlanar Chaos · 165 | Planar Chaos | 165 | Rare | €31.95 |
| Urborg, Tomb of YawgmothThe List Tokens · UMA-254 | The List Tokens | UMA-254 | Rare | €41.68 |
| Urborg, Tomb of YawgmothTime Spiral Remastered · 287 | Time Spiral Remastered | 287 | Rare | €39.67 |
| Urborg, Tomb of YawgmothUltimate Masters · 254 | Ultimate Masters | 254 | Rare | €36.23 |
| Urborg, Tomb of YawgmothPioneer Masters · 118 | Pioneer Masters | 118 | Rare | — |
| Ur-DragoLegends · 268 | Legends | 268 | Rare | €16.70 |
| Urianger AugureltFinal Fantasy Commander · 96 | Final Fantasy Commander | 96 | Rare | $0.20 |
| Urianger AugureltFinal Fantasy Commander · 189 | Final Fantasy Commander | 189 | Rare | $0.48 |
| UrsapineSalvat 2005 · K49 | Salvat 2005 | K49 | Rare | €0.10 |
| UrsapineRavnica: City of Guilds · 188 | Ravnica: City of Guilds | 188 | Rare | €0.19 |
| Ursine MonstrosityDuskmourn: House of Horror Commander · 36 | Duskmourn: House of Horror Commander | 36 | Rare | €0.06 |
| Ursine MonstrosityDuskmourn: House of Horror Commander · 63 | Duskmourn: House of Horror Commander | 63 | Rare | €0.40 |
| Urtet, Remnant of MemnarchPhyrexia: All Will Be One Commander · 42 | Phyrexia: All Will Be One Commander | 42 | Rare | €2.27 |
| UrzaVanguard Series · 407 | Vanguard Series | 407 | Rare | €13.95 |
| Urza Assembles the TitansDominaria United · 37 | Dominaria United | 37 | Rare | €0.27 |
| Urza Assembles the TitansDominaria United Promos · 37p | Dominaria United Promos | 37p | Rare | €0.22 |
| Urza Assembles the TitansDominaria United Promos · 37s | Dominaria United Promos | 37s | Rare | €0.60 |
| Urza, Lord High ArtificerMagic Online Promos · 91229 | Magic Online Promos | 91229 | Rare | — |
| Urza, Prince of KroogThe Brothers' War · 226 | The Brothers' War | 226 | Rare | $0.47 |