| Unfinished BusinessWilds of Eldraine Commander · 44 | Wilds of Eldraine Commander | 44 | Rare | €0.50 |
| Unflinching CourageBattlebond · 230 | Battlebond | 230 | Uncommon | €0.13 |
| Unflinching CourageCommander 2018 · 192 | Commander 2018 | 192 | Uncommon | €0.18 |
| Unflinching CourageDragon's Maze · 111 | Dragon's Maze | 111 | Uncommon | €0.12 |
| Unflinching CourageFoundations · 722 | Foundations | 722 | Uncommon | $0.14 |
| Unflinching CourageModern Masters 2017 · 197 | Modern Masters 2017 | 197 | Uncommon | €0.18 |
| Unflinching CourageThe List Tokens · C18-192 | The List Tokens | C18-192 | Uncommon | €0.24 |
| Unflinching CouragePioneer Masters · 250 | Pioneer Masters | 250 | Uncommon | — |
| Unflinching HortimancerReality Fracture · 23 | Reality Fracture | 23 | Common | €0.06 |
| UnforgeDarksteel · 71 | Darksteel | 71 | Common | €0.05 |
| Unforgiving AimLorwyn Eclipsed · 200 | Lorwyn Eclipsed | 200 | Common | €0.07 |
| Unforgiving OneKamigawa: Neon Dynasty · 127 | Kamigawa: Neon Dynasty | 127 | Uncommon | €0.13 |
| Unforgiving OvertakeAlchemy: Aetherdrift · 11 | Alchemy: Aetherdrift | 11 | Uncommon | — |
| Unfortunate AccidentOutlaws of Thunder Junction · 111 | Outlaws of Thunder Junction | 111 | Uncommon | €0.06 |
| Unfriendly FireIxalan · 172 | Ixalan | 172 | Common | $0.05 |
| Unfulfilled DesiresMirage · 285 | Mirage | 285 | Rare | €7.41 |
| Unglued Pea-Brained DinosaurUnfinity Sticker Sheets · 45 | Unfinity Sticker Sheets | 45 | Common | $0.59 |
| Unhallowed PactAvacyn Restored · 124 | Avacyn Restored | 124 | Common | €0.04 |
| Unhallowed PactConspiracy · 131 | Conspiracy | 131 | Common | €0.13 |
| Unhallowed PactDuel Decks: Nissa vs. Ob Nixilis Tokens · 64 | Duel Decks: Nissa vs. Ob Nixilis Tokens | 64 | Common | €0.09 |
| Unhallowed PhalanxInnistrad: Double Feature · 402 | Innistrad: Double Feature | 402 | Common | €0.23 |
| Unhallowed PhalanxInnistrad: Crimson Vow · 135 | Innistrad: Crimson Vow | 135 | Common | €0.11 |
| UnhingeTorment · 87 | Torment | 87 | Common | €0.07 |
| Unhinged Beast HuntUnfinity Sticker Sheets · 39 | Unfinity Sticker Sheets | 39 | Common | €0.17 |
| Unholy Annex // Ritual ChamberDuskmourn: House of Horror · 118 | Duskmourn: House of Horror | 118 | Rare | €2.08 |
| Unholy Annex // Ritual ChamberDuskmourn: House of Horror · 339 | Duskmourn: House of Horror | 339 | Rare | €2.56 |
| Unholy Annex // Ritual ChamberDuskmourn: House of Horror Promos · 118p | Duskmourn: House of Horror Promos | 118p | Rare | $1.47 |
| Unholy Annex // Ritual ChamberDuskmourn: House of Horror Promos · 118s | Duskmourn: House of Horror Promos | 118s | Rare | €3.49 |
| Unholy CitadelLegends · 309 | Legends | 309 | Uncommon | €4.47 |
| Unholy GrottoAetherdrift Commander · 182 | Aetherdrift Commander | 182 | Rare | $0.43 |
| Unholy GrottoOnslaught · 327 | Onslaught | 327 | Rare | €4.66 |
| Unholy GrottoThe List Tokens · ONS-327 | The List Tokens | ONS-327 | Rare | €3.47 |
| Unholy Grotto // Unholy GrottoSecret Lair Drop Tokens · 1462 | Secret Lair Drop Tokens | 1462 | Rare | €8.44 |
| Unholy HeatModern Horizons 2 Timeshifts · 13 | Modern Horizons 2 Timeshifts | 13 | Common | $0.35 |
| Unholy HeatMystery Booster 2 Tokens · 63 | Mystery Booster 2 Tokens | 63 | Common | $0.23 |
| Unholy HeatModern Horizons 2 · 145 | Modern Horizons 2 | 145 | Common | €0.16 |
| Unholy HeatOutlaws of Thunder Junction Commander · 182 | Outlaws of Thunder Junction Commander | 182 | Common | €0.29 |
| Unholy HeatSecret Lair Promo · 4 | Secret Lair Promo | 4 | Rare | $1.24 |
| Unholy HeatSpecial Guests · 71 | Special Guests | 71 | Mythic Rare | $1.47 |
| Unholy HeatJumpstart: Historic Horizons · 529 | Jumpstart: Historic Horizons | 529 | Common | — |
| Unholy HungerMagic Origins · 125 | Magic Origins | 125 | Common | $0.03 |
| Unholy HungerUltimate Masters · 120 | Ultimate Masters | 120 | Common | $0.05 |
| Unholy IndentureCore Set 2020 · 119 | Core Set 2020 | 119 | Common | €0.20 |
| Unholy OfficiantInnistrad: Double Feature · 308 | Innistrad: Double Feature | 308 | Common | €0.09 |
| Unholy OfficiantInnistrad: Crimson Vow · 41 | Innistrad: Crimson Vow | 41 | Common | €0.08 |
| Unholy OfficiantInnistrad: Crimson Vow · 286 | Innistrad: Crimson Vow | 286 | Common | €0.09 |
| Unholy StrengthUnlimited Edition · 132 | Unlimited Edition | 132 | Common | $1.44 |
| Unholy StrengthRevised Edition · 133 | Revised Edition | 133 | Common | €0.26 |
| Unholy Strength30th Anniversary Edition · 128 | 30th Anniversary Edition | 128 | Common | €0.37 |
| Unholy Strength30th Anniversary Edition · 425 | 30th Anniversary Edition | 425 | Common | €29.99 |