| Murkfiend LiegeDouble Masters 2022 · 529 | Double Masters 2022 | 529 | Rare | €3.96 |
| Murkfiend LiegeCommander 2013 · 231 | Commander 2013 | 231 | Rare | €0.50 |
| Murkfiend LiegeCommander Anthology · 204 | Commander Anthology | 204 | Rare | €1.46 |
| Murkfiend LiegeCommander Legends · 448 | Commander Legends | 448 | Rare | €0.82 |
| Murkfiend LiegeEventide · 156 | Eventide | 156 | Rare | €1.98 |
| Murkfiend LiegeThe List Tokens · EVE-156 | The List Tokens | EVE-156 | Rare | €0.39 |
| MurmurationBloomburrow Commander · 10 | Bloomburrow Commander | 10 | Rare | $0.39 |
| MurmurationBloomburrow Commander · 46 | Bloomburrow Commander | 46 | Rare | €0.02 |
| Murmuring BoskCommander 2016 · 308 | Commander 2016 | 308 | Rare | €0.44 |
| Murmuring BoskCommander Anthology Volume II · 258 | Commander Anthology Volume II | 258 | Rare | €0.43 |
| Murmuring BoskDominaria United Commander · 220 | Dominaria United Commander | 220 | Rare | €0.40 |
| Murmuring BoskTales of Middle-earth Commander · 320 | Tales of Middle-earth Commander | 320 | Rare | €0.20 |
| Murmuring BoskMorningtide · 147 | Morningtide | 147 | Rare | €0.64 |
| Murmuring BoskThe List Tokens · DMC-220 | The List Tokens | DMC-220 | Rare | $0.42 |
| Muscle SliverFriday Night Magic 2003 · 2 | Friday Night Magic 2003 | 2 | Rare | €19.32 |
| Muscle SliverSecret Lair Drop Tokens · 653 | Secret Lair Drop Tokens | 653 | Rare | €2.48 |
| Muse VesselDissension · 163 | Dissension | 163 | Rare | €0.33 |
| Muse VortexCommander 2021 · 28 | Commander 2021 | 28 | Rare | €0.19 |
| Muse VortexCommander 2021 · 355 | Commander 2021 | 355 | Rare | €0.28 |
| Muse VortexMagic Online Promos · 90032 | Magic Online Promos | 90032 | Rare | — |
| MusicianIce Age · 85 | Ice Age | 85 | Rare | $1.15 |
| MusicianMasters Edition II · 56 | Masters Edition II | 56 | Rare | — |
| Mutable ExplorerLorwyn Eclipsed · 186 | Lorwyn Eclipsed | 186 | Rare | $1.33 |
| Mutable ExplorerLorwyn Eclipsed · 327 | Lorwyn Eclipsed | 327 | Rare | €1.67 |
| Mutable ExplorerLorwyn Eclipsed Promos · 186p | Lorwyn Eclipsed Promos | 186p | Rare | €1.46 |
| Mutagen Man, Living OozeTeenage Mutant Ninja Turtles · 124 | Teenage Mutant Ninja Turtles | 124 | Rare | €1.72 |
| Mutagen Man, Living OozeTeenage Mutant Ninja Turtles · 273 | Teenage Mutant Ninja Turtles | 273 | Rare | $2.81 |
| Mutalith Vortex BeastWarhammer 40,000 Commander · 134 | Warhammer 40,000 Commander | 134 | Rare | $0.41 |
| Mutalith Vortex BeastWarhammer 40,000 Commander · 134★ | Warhammer 40,000 Commander | 134★ | Rare | $2.28 |
| Mutated CultistModern Horizons 3 Commander · 53 | Modern Horizons 3 Commander | 53 | Rare | €0.02 |
| Mutational AdvantageFallout · 111 | Fallout | 111 | Rare | $5.84 |
| Mutational AdvantageFallout · 422 | Fallout | 422 | Rare | $6.43 |
| Mutational AdvantageFallout · 639 | Fallout | 639 | Rare | $9.41 |
| Mutational AdvantageFallout · 950 | Fallout | 950 | Rare | $8.08 |
| Mutational AdvantageSecret Lair Drop Tokens · 2454 | Secret Lair Drop Tokens | 2454 | Rare | $7.76 |
| MutavaultCommander Legends: Battle for Baldur's Gate · 903 | Commander Legends: Battle for Baldur's Gate | 903 | Rare | $4.14 |
| MutavaultMagic 2014 · 228 | Magic 2014 | 228 | Rare | $3.80 |
| MutavaultMorningtide · 148 | Morningtide | 148 | Rare | €5.04 |
| MutavaultChamps and States · 12 | Champs and States | 12 | Rare | €776.29 |
| MutavaultGrand Prix Promos · 2018 | Grand Prix Promos | 2018 | Rare | $5.38 |
| MutavaultThe List Tokens · CLB-903 | The List Tokens | CLB-903 | Rare | $4.26 |
| MutavaultExplorer Anthology 2 · 23 | Explorer Anthology 2 | 23 | Rare | — |
| MutavaultMagic Online Promos · 31425 | Magic Online Promos | 31425 | Rare | — |
| MutavaultMagic Online Promos · 66888 | Magic Online Promos | 66888 | Rare | — |
| MutilateWarhammer 40,000 Commander · 203 | Warhammer 40,000 Commander | 203 | Rare | €1.49 |
| MutilateWarhammer 40,000 Commander · 203★ | Warhammer 40,000 Commander | 203★ | Rare | $5.48 |
| MutilateCommander 2014 · 150 | Commander 2014 | 150 | Rare | €0.74 |
| MutilateDuel Decks: Garruk vs. Liliana · 55 | Duel Decks: Garruk vs. Liliana | 55 | Rare | €1.31 |
| MutilateDuel Decks Anthology: Garruk vs. Liliana · 55 | Duel Decks Anthology: Garruk vs. Liliana | 55 | Rare | $1.96 |
| MutilateMagic 2013 · 102 | Magic 2013 | 102 | Rare | $1.19 |