| Unholy StrengthFourth Edition Foreign Black Border · 166 | Fourth Edition Foreign Black Border | 166 | Common | €0.30 |
| Unholy StrengthTenth Edition · 185 | Tenth Edition | 185 | Common | €0.04 |
| Unholy StrengthTenth Edition · 185★ | Tenth Edition | 185★ | Common | $0.07 |
| Unholy StrengthFourth Edition · 166 | Fourth Edition | 166 | Common | €0.08 |
| Unholy StrengthFifth Edition · 201 | Fifth Edition | 201 | Common | €0.08 |
| Unholy StrengthSeventh Edition · 168 | Seventh Edition | 168 | Common | $0.17 |
| Unholy StrengthSeventh Edition · 168★ | Seventh Edition | 168★ | Common | $0.17 |
| Unholy StrengthEighth Edition · 169 | Eighth Edition | 169 | Common | €0.07 |
| Unholy StrengthEighth Edition · 169★ | Eighth Edition | 169★ | Common | $0.28 |
| Unholy StrengthNinth Edition · 168 | Ninth Edition | 168 | Common | €0.03 |
| Unholy StrengthNinth Edition · 168★ | Ninth Edition | 168★ | Common | $0.09 |
| Unholy StrengthAnthologies · 28 | Anthologies | 28 | Common | $0.17 |
| Unholy StrengthCollectors' Edition · 132 | Collectors' Edition | 132 | Common | €2.73 |
| Unholy StrengthIntl. Collectors' Edition · 132 | Intl. Collectors' Edition | 132 | Common | $9.23 |
| Unholy StrengthDuel Decks: Divine vs. Demonic · 47 | Duel Decks: Divine vs. Demonic | 47 | Common | €0.14 |
| Unholy StrengthDuels of the Planeswalkers · 36 | Duels of the Planeswalkers | 36 | Common | €0.12 |
| Unholy StrengthDuel Decks Anthology: Divine vs. Demonic · 47 | Duel Decks Anthology: Divine vs. Demonic | 47 | Common | €0.09 |
| Unholy StrengthForeign Black Border · 133 | Foreign Black Border | 133 | Common | €0.41 |
| Unholy StrengthLimited Edition Alpha · 131 | Limited Edition Alpha | 131 | Common | €32.86 |
| Unholy StrengthLimited Edition Beta · 132 | Limited Edition Beta | 132 | Common | €9.09 |
| Unholy StrengthMagic 2010 · 116 | Magic 2010 | 116 | Common | €0.06 |
| Unholy StrengthMagic 2011 · 119 | Magic 2011 | 119 | Common | €0.04 |
| Unholy StrengthSalvat 2011 · 87 | Salvat 2011 | 87 | Common | €0.24 |
| Unholy StrengthSummer Magic / Edgar · 133 | Summer Magic / Edgar | 133 | Common | €379.81 |
| UnicornsJumpstart Front Cards · 41 | Jumpstart Front Cards | 41 | — | $0.37 |
| UnicycleMystery Booster Playtest Cards 2019 · 110 | Mystery Booster Playtest Cards 2019 | 110 | Rare | €0.02 |
| UnicycleMystery Booster Playtest Cards 2021 · 110 | Mystery Booster Playtest Cards 2021 | 110 | Rare | $0.28 |
| Unicycling AutomatonUnknown Event · CA03 | Unknown Event | CA03 | Common | — |
| Unidentified HovershipDuskmourn: House of Horror · 37 | Duskmourn: House of Horror | 37 | Rare | €0.13 |
| Unidentified HovershipDuskmourn: House of Horror · 305 | Duskmourn: House of Horror | 305 | Rare | €0.21 |
| Unidentified HovershipDuskmourn: House of Horror Promos · 37p | Duskmourn: House of Horror Promos | 37p | Rare | €0.08 |
| Unidentified HovershipDuskmourn: House of Horror Promos · 37s | Duskmourn: House of Horror Promos | 37s | Rare | $0.47 |
| Unidentified Hovership // Unidentified HovershipDuskmourn: House of Horror Art Series · 2 | Duskmourn: House of Horror Art Series | 2 | — | €0.30 |
| Unified FrontBattle for Zendikar · 53 | Battle for Zendikar | 53 | Uncommon | $0.09 |
| Unified LungeFace the Hydra Tokens · 15 | Face the Hydra Tokens | 15 | Common | $0.42 |
| Unified StrikeOnslaught · 58 | Onslaught | 58 | Common | €0.10 |
| Unified WillRise of the Eldrazi · 92 | Rise of the Eldrazi | 92 | Uncommon | $0.17 |
| Unifying TheoryOdyssey · 112 | Odyssey | 112 | Rare | €0.41 |
| Uninvited Geist // Unimpeded TrespasserShadows over Innistrad · 94 | Shadows over Innistrad | 94 | Uncommon | $0.09 |
| Union of the Third PathThe Brothers' War · 31 | The Brothers' War | 31 | Common | €0.19 |
| Unique Charmed PantsUnfinity Sticker Sheets · 38 | Unfinity Sticker Sheets | 38 | Common | €0.18 |
| United BattlefrontTarkir: Dragonstorm Promos · 32p | Tarkir: Dragonstorm Promos | 32p | Rare | €0.25 |
| United BattlefrontTarkir: Dragonstorm Promos · 32s | Tarkir: Dragonstorm Promos | 32s | Rare | €0.77 |
| United BattlefrontTarkir: Dragonstorm · 32 | Tarkir: Dragonstorm | 32 | Rare | €0.20 |
| United BattlefrontTarkir: Dragonstorm · 330 | Tarkir: Dragonstorm | 330 | Rare | $0.28 |
| United Battlefront // United BattlefrontTarkir: Dragonstorm Art Series · 5 | Tarkir: Dragonstorm Art Series | 5 | — | — |
| United FrontAvatar: The Last Airbender Promos · 39s | Avatar: The Last Airbender Promos | 39s | Mythic Rare | €5.87 |
| United FrontAvatar: The Last Airbender · 39 | Avatar: The Last Airbender | 39 | Mythic Rare | €1.79 |
| United FrontAvatar: The Last Airbender · 331 | Avatar: The Last Airbender | 331 | Mythic Rare | €3.20 |
| Unite the CoalitionDominaria United Commander · 15 | Dominaria United Commander | 15 | Rare | €0.09 |