| Ulder Ravengard, MarshalAlchemy Horizons: Baldur's Gate · 76 | Alchemy Horizons: Baldur's Gate | 76 | Rare | — |
| Ulrich of the Krallenhorde // Ulrich, Uncontested AlphaShadows over Innistrad Remastered · 246 | Shadows over Innistrad Remastered | 246 | Rare | — |
| UltimaFinal Fantasy · 38 | Final Fantasy | 38 | Rare | $0.42 |
| UltimaFinal Fantasy · 328 | Final Fantasy | 328 | Rare | €2.51 |
| UltimaFinal Fantasy Promos · 38s | Final Fantasy Promos | 38s | Rare | €5.58 |
| UltimaFIN Standard Showdown · 1 | FIN Standard Showdown | 1 | Rare | €3.19 |
| Ultima, Origin of OblivionFinal Fantasy · 2 | Final Fantasy | 2 | Rare | €0.67 |
| Ultima, Origin of OblivionFinal Fantasy · 324 | Final Fantasy | 324 | Rare | €2.41 |
| Ultima, Origin of OblivionFinal Fantasy · 421 | Final Fantasy | 421 | Rare | $3.85 |
| Ultima, Origin of OblivionFinal Fantasy Promos · 2s | Final Fantasy Promos | 2s | Rare | €5.45 |
| Ultimate Green GoblinMarvel's Spider-Man Promos · 157s | Marvel's Spider-Man Promos | 157s | Rare | €0.81 |
| Ultimate Green GoblinWizards Play Network 2025 · 12 | Wizards Play Network 2025 | 12 | Rare | €0.25 |
| Ultimate Green GoblinMarvel's Spider-Man · 157 | Marvel's Spider-Man | 157 | Rare | €0.30 |
| Ultimate Green GoblinMarvel's Spider-Man · 276 | Marvel's Spider-Man | 276 | Rare | €0.33 |
| Ultimate Green GoblinThrough the Omenpaths · 153 | Through the Omenpaths | 153 | Rare | — |
| Ultimate Magic: HolyFinal Fantasy Commander · 32 | Final Fantasy Commander | 32 | Rare | $0.37 |
| Ultimate Magic: HolyFinal Fantasy Commander · 110 | Final Fantasy Commander | 110 | Rare | $1.46 |
| Ultimate Magic: MeteorFinal Fantasy Commander · 62 | Final Fantasy Commander | 62 | Rare | €0.21 |
| Ultimate Magic: MeteorFinal Fantasy Commander · 121 | Final Fantasy Commander | 121 | Rare | €0.40 |
| Ultimate NullificationMarvel Super Heroes Commander · 26 | Marvel Super Heroes Commander | 26 | Rare | $0.22 |
| Ultimate NullificationMarvel Super Heroes Commander · 324 | Marvel Super Heroes Commander | 324 | Rare | $0.47 |
| Ultimate PriceFriday Night Magic 2015 · 10 | Friday Night Magic 2015 | 10 | Rare | €0.18 |
| Ultima WeaponFinal Fantasy · 563 | Final Fantasy | 563 | Rare | $4.24 |
| Ultimecia, Temporal ThreatFinal Fantasy · 441 | Final Fantasy | 441 | Rare | $3.95 |
| Ultimecia, Temporal ThreatFinal Fantasy · 556 | Final Fantasy | 556 | Rare | $0.52 |
| Ultimecia, Temporal ThreatMedia and Collaboration Promos · 2025-11 | Media and Collaboration Promos | 2025-11 | Rare | $1.37 |
| Ultramarines Honour GuardWarhammer 40,000 Commander · 18 | Warhammer 40,000 Commander | 18 | Rare | €3.47 |
| Ultramarines Honour GuardWarhammer 40,000 Commander · 18★ | Warhammer 40,000 Commander | 18★ | Rare | $10.12 |
| Ultron, Machine OverlordMarvel Super Heroes Commander · 507 | Marvel Super Heroes Commander | 507 | Rare | €1.97 |
| Ultron, UnlimitedMarvel Super Heroes Commander · 100 | Marvel Super Heroes Commander | 100 | Rare | €0.39 |
| Ultron, UnlimitedMarvel Super Heroes Commander · 422 | Marvel Super Heroes Commander | 422 | Rare | €2.84 |
| Ulvenwald HydraShadows over Innistrad Remastered · 222 | Shadows over Innistrad Remastered | 222 | Rare | — |
| Ulvenwald ObserverEldritch Moon · 176 | Eldritch Moon | 176 | Rare | €0.31 |
| Ulvenwald ObserverEldritch Moon Promos Tokens · 176 | Eldritch Moon Promos Tokens | 176 | Rare | €0.26 |
| Ulvenwald ObserverEldritch Moon Promos Tokens · 176s | Eldritch Moon Promos Tokens | 176s | Rare | €0.24 |
| Ulvenwald ObserverMagic Online Promos · 61553 | Magic Online Promos | 61553 | Rare | — |
| Ulvenwald Oddity // Ulvenwald BehemothInnistrad: Double Feature · 492 | Innistrad: Double Feature | 492 | Rare | €0.79 |
| Ulvenwald Oddity // Ulvenwald BehemothInnistrad: Crimson Vow Promos · 225s | Innistrad: Crimson Vow Promos | 225s | Rare | €1.17 |
| Ulvenwald Oddity // Ulvenwald BehemothInnistrad: Crimson Vow · 225 | Innistrad: Crimson Vow | 225 | Rare | €0.35 |
| Ulvenwald Oddity // Ulvenwald BehemothInnistrad: Crimson Vow · 394 | Innistrad: Crimson Vow | 394 | Rare | €1.46 |
| Ulvenwald Oddity // Ulvenwald BehemothMagic Online Promos · 95421 | Magic Online Promos | 95421 | Rare | — |
| Ulvenwald TrackerAvacyn Restored · 200 | Avacyn Restored | 200 | Rare | €3.74 |
| Ulvenwald TrackerModern Masters 2017 · 144 | Modern Masters 2017 | 144 | Rare | €4.31 |
| Ulvenwald TrackerSecret Lair Drop Tokens · 1283 | Secret Lair Drop Tokens | 1283 | Rare | €10.49 |
| Umaro, Raging YetiFinal Fantasy Commander · 63 | Final Fantasy Commander | 63 | Rare | €0.20 |
| Umaro, Raging YetiFinal Fantasy Commander · 156 | Final Fantasy Commander | 156 | Rare | $0.33 |
| UmbilicusDominaria Remastered · 237 | Dominaria Remastered | 237 | Rare | €0.22 |
| UmbilicusDominaria Remastered · 390 | Dominaria Remastered | 390 | Rare | €0.24 |
| UmbilicusUrza's Saga · 312 | Urza's Saga | 312 | Rare | $0.83 |
| Umbral ExpanseSecrets of Strixhaven Commander · 60 | Secrets of Strixhaven Commander | 60 | Rare | $0.43 |