| Utopia Vow | PLC-142 |
| Utopia Sprawl | DIS-99 |
| Urza's Saga | MH2-259 |
| Urza's Ruinous Blast | DMC-107 |
| Urza's Rage | C15-169 |
| Urza's Incubator | C15-273 |
| Urza's Factory | TSR-288 |
| Urza's Blueprints | ULG-137 |
| Urza's Armor | USG-313 |
| Uro, Titan of Nature's Wrath | THB-229 |
| Urborg, Tomb of Yawgmoth | UMA-254 |
| Urborg Volcano | INV-330 |
| Urborg Uprising | EMA-111 |
| Urborg Repossession | DMU-114 |
| Urborg Panther | MIR-150 |
| Urban Evolution | MM3-198 |
| Urabrask the Hidden | IMA-152 |
| Unyielding Krumar | KTK-94 |
| Unwinding Clock | NPH-164 |
| Unwavering Initiate | AKH-36 |
| Untamed Hunger | OGW-91 |
| Unsubstantiate | EMN-79 |
| Unstoppable Ash | MOR-137 |
| Unstable Frontier | CON-145 |
| Unspeakable Symbol | SCG-79 |
| Unsettled Mariner | MH1-216 |
| Unseal the Necropolis | MOM-128 |
| Unmask | MMQ-168 |
| Unmake | EVE-96 |
| Unlicensed Disintegration | KLD-187 |
| Universal Solvent | AER-178 |
| Universal Automaton | J22-803 |
| Universal Automaton | MH1-235 |
| Unholy Grotto | ONS-327 |
| Unflinching Courage | C18-192 |
| Unexpected Windfall | AFR-164 |
| Unexpected Results | GTC-203 |
| Unexpected Fangs | IKO-102 |
| Unearth | ULG-72 |
| Undying Rage | EMA-152 |
| Undo | P02-59 |
| Underworld Hermit | MH2-105 |
| Underworld Coinsmith | C15-237 |
| Underdark Rift | AFC-62 |
| Undercity's Embrace | RNA-89 |
| Undercity Informer | GTC-82 |
| Undead Warchief | TSB-52 |
| Undead Slayer | M10-37 |
| Undead Augur | MH1-112 |
| Uncomfortable Chill | M19-82 |