| 24 | Marketwatch Phantom | Bram Sels | White | C | Murders at Karlov Manor |
| 14 | Markov Baron | Ina Wong | Black | U | March of the Machine: The Aftermath |
| 64 | Markov Baron | Xiaobotong | Black | U | March of the Machine: The Aftermath |
| 114 | Markov Baron | Ina Wong | Black | U | March of the Machine: The Aftermath |
| 198 | Markov Baron | Xiaobotong | Black | U | March of the Machine: The Aftermath |
| 96 | Markov Blademaster | Jana Schirmer & Johannes Voss | Red | R | Dark Ascension |
| 95 | Markov Crusader | Johannes Voss | Black | U | Eldritch Moon |
| 108 | Markov Crusader | Johannes Voss | Black | U | Jumpstart: Historic Horizons |
| 122 | Markov Dreadknight | Darek Zabrocki | Black | R | Shadows over Innistrad |
| 26 | Markov Enforcer | Wisnu Tan | Red | R | Innistrad: Crimson Vow Commander |
| 64 | Markov Enforcer | Wisnu Tan | Red | R | Innistrad: Crimson Vow Commander |
| 107 | Markov Patrician | Jana Schirmer & Johannes Voss | Black | C | Innistrad |
| 241 | Markov Purifier | G-host Lee | White/Black | U | Innistrad: Crimson Vow |
| 312 | Markov Purifier | Samuel Araya | White/Black | U | Innistrad: Crimson Vow |
| 171 | Markov Retribution | Uriah Voth | Red | U | Innistrad: Crimson Vow |
| 242 | Markov Waltzer | Joshua Raphael | White/Red | U | Innistrad: Crimson Vow |
| 313 | Markov Waltzer | Jason A. Engle | White/Red | U | Innistrad: Crimson Vow |
| 97 | Markov Warlord | Cynthia Sheppard | Red | U | Dark Ascension |
| 573 | Markov Warlord | Cynthia Sheppard | Red | U | Jumpstart 2022 |
| 55 | Markov's Servant | Steve Argyle | Black | C | Dark Ascension |
| 175 | Marneus Calgar | Slawomir Maniak | White/Blue/Black | M | Warhammer 40,000 Commander |
| Maro | Stuart Griffin | Green | R | Mirage |
| 241 | Maro | Stuart Griffin | Green | R | Classic Sixth Edition |
| 254 | Maro | Stuart Griffin | Green | R | Ninth Edition |
| 256 | Maro | Pete Venters | Green | R | Seventh Edition |
| 264 | Maro | Stuart Griffin | Green | R | Eighth Edition |
| 80 | Maro's Gone Nuts (playtest) | Mark Rosewater | Green | C | Mystery Booster |
| 82 | Marrow Bats | Jason A. Engle | Black | U | Commander 2013 Edition |
| 113 | Marrow Bats | Jason A. Engle | Black | U | Avacyn Restored |
| 93 | Marrow Chomper | Lars Grant-West | Black/Green | U | Alara Reborn |
| 15 | Marrow Shards | Raymond Swanland | White | U | New Phyrexia |
| 34 | Marrow-Gnawer | Jenn Ravenna | Black | R | Secret Lair Drop |
| 79 | Marrow-Gnawer | Néstor Ossandón Leal | Black | R | Bloomburrow Commander |
| 109 | Marrow-Gnawer | Wayne Reynolds | Black | R | Jumpstart: Historic Horizons |
| 124 | Marrow-Gnawer | Wayne Reynolds | Black | R | Champions of Kamigawa |
| 118 | Marsh Boa | Heather Hudson | Green | C | Prophecy |
| 54 | Marsh Casualties | Scott Chou | Black | U | Duel Decks: Zendikar vs. Eldrazi |
| 69 | Marsh Casualties | Scott Chou | Black | U | Duel Decks: Jace vs. Vraska |
| 101 | Marsh Casualties | Scott Chou | Black | U | Zendikar |
| 115 | Marsh Crocodile | Kev Walker | Blue/Black | U | Planeshift |
| 6 | Marsh Flats | Sam Burley | | M | Zendikar Rising Expeditions |
| 21 | Marsh Flats | Ryan Yee | | M | Zendikar Expeditions |
| 219 | Marsh Flats | Izzy | | R | Zendikar |
| 239 | Marsh Flats | Izzy | | R | Modern Masters 2017 Edition |
| 248 | Marsh Flats | Izzy | | R | Modern Horizons 2 |
| 437 | Marsh Flats | Izzy | | R | Modern Horizons 2 |
| 476 | Marsh Flats | Izzy | | R | Modern Horizons 2 |
| 46 | Marsh Flitter | Wayne Reynolds | Black | U | Zendikar Rising Commander |
| 91 | Marsh Flitter | Wayne Reynolds | Black | U | Modern Masters |
| 125 | Marsh Flitter | Wayne Reynolds | Black | U | Lorwyn |
| Marsh Gas | Douglas Shuler | Black | C | Fourth Edition |
| Marsh Gas | Douglas Shuler | Black | C | The Dark |
| Marsh Goblins | Quinton Hoover | Black/Red | C | The Dark |
| 109 | Marsh Hulk | Raf Sarmento | Black | C | Dragons of Tarkir |
| Marsh Lurker | Tom Kyffin | Black | C | Tempest |
| 14 | Marsh Threader | David Palumbo | White | C | Worldwake |
| Marsh Viper | Ron Spencer | Green | C | Fifth Edition |
| Marsh Viper | Ron Spencer | Green | C | Fourth Edition |
| Marsh Viper | Ron Spencer | Green | C | The Dark |
| 246 | Marshal of Zhalfir | Darren Tan | White/Blue | U | March of the Machine |
| 13 | Marshaling Cry | Vance Kovacs | White | C | Future Sight |
| 141 | Marshaling the Troops | Liu Shangying | Green | R | Portal Three Kingdoms |
| 15 | Marshal's Anthem | Matt Stewart | White | R | Worldwake |
| 29 | Marshal's Anthem | Matt Stewart | White | R | Kaldheim Commander |
| 74 | Marshal's Anthem | Matt Stewart | White | R | Commander 2015 |
| 77 | Marshal's Anthem | Matt Stewart | White | R | Commander 2014 |
| 82 | Marshal's Anthem | Matt Stewart | White | R | Outlaws of Thunder Junction Commander |
| 166 | Marshal's Anthem | Veli Nyström | White | R | Magic The Gathering—Fallout |
| 172 | Marshal's Anthem | Erion Makuo | White | R | The Lord of the Rings: Tales of Middle Earth Commander |
| 453 | Marshal's Anthem | Veli Nyström | White | R | Magic The Gathering—Fallout |
| 69 | Marshdrinker Giant | Daarken | Green | U | Eventide |
| 43 | Marshland Bloodcaster | Jodie Muir | Black | R | Commander 2021 |
| 139 | Marshland Bloodcaster | Jodie Muir | Black | R | Outlaws of Thunder Junction Commander |
| 370 | Marshland Bloodcaster | Jodie Muir | Black | R | Commander 2021 |
| 76 | Marshmist Titan | Volkan Baga | Black | C | Born of the Gods |
| 48 | Martha Jones | Daniel Correia | Blue | R | Doctor Who Commander |
| 363 | Martha Jones | Daniel Correia | Blue | R | Doctor Who Commander |
| 9 | Martial Coup | Greg Staples | White | M | From the Vault: Annihilation (2014) |
| 11 | Martial Coup | Greg Staples | White | R | Conflux |
| 69 | Martial Coup | Greg Staples | White | R | Commander 2018 |
| 78 | Martial Coup | Greg Staples | White | R | Commander 2014 |
| 79 | Martial Coup | Greg Staples | White | R | Phyrexia: All Will Be One Commander |
| 146 | Martial Coup | Greg Staples | White | R | Bloomburrow Commander |
| 167 | Martial Coup | Monztre | White | R | Magic The Gathering—Fallout |
| 189 | Martial Coup | Diego Gisbert | White | R | Warhammer 40,000 Commander |
| 206 | Martial Coup | Greg Staples | White | R | Streets of New Capenna Commander |
| 378 | Martial Coup | Greg Staples | White | R | Commander Legends |
| 454 | Martial Coup | Monztre | White | R | Magic The Gathering—Fallout |
| 91 | Martial Glory | Raymond Swanland | White/Red | C | Guild Kit: Boros |
| 175 | Martial Glory | Raymond Swanland | White/Red | C | Gatecrash |
| 249 | Martial Glory | Raymond Swanland | White/Red | C | Double Masters 2022 |
| 28 | Martial Impetus | Aaron Miller | White | U | Ikoria Commander |
| 33 | Martial Impetus | Brian Valeza | White | C | Commander Legends: Battle for Baldur's Gate |
| 65 | Martial Impetus | Aaron Miller | White | C | Ravnica Clue Edition |
| 72 | Martial Impetus | Aaron Miller | White | U | Murders at Karlov Manor Commander |
| 96 | Martial Impetus | Aaron Miller | White | U | Commander 2021 |
| 108 | Martial Impetus | Alexander Mokhov | White | U | Bloomburrow Commander |
| 14 | Martial Law | Tyler Jacobson | White | R | Return to Ravnica |
| Márton Stromgald | Mark Poole | Red | R | Ice Age |
| 104 | Márton Stromgald | Mark Poole | Red | R | Masters Edition |
| 23 | Martyr for the Cause | Zoltan Boros | White | C | War of the Spark |
| 92 | Martyr of Ashes | Ralph Horsley | Red | C | Coldsnap |
| 65 | Martyr of Bones | E. M. Gist | Black | C | Coldsnap |
| 14 | Martyr of Dusk | Greg Staples | White | C | Rivals of Ixalan |
| 132 | Martyr of Dusk | Greg Staples | White | C | The Lost Caverns of Ixalan Commander |
| 2 | Martyr of Frost | Wayne England | Blue | C | Duel Decks Anthology, Jace vs. Chandra |
| 2 | Martyr of Frost | Wayne England | Blue | C | Duel Decks: Jace vs. Chandra |
| 40 | Martyr of Frost | Wayne England | Blue | C | Coldsnap |
| 15 | Martyr of Sands | Randy Gallegos | White | C | Coldsnap |
| 25 | Martyr of Sands | Randy Gallegos | White | C | Ultimate Masters |
| 113 | Martyr of Spores | Dan Scott | Green | C | Coldsnap |
| Martyrdom | Mark Poole | White | C | Alliances |
| Martyrdom | Mark Poole | White | C | Alliances |
| 12 | Martyred Rusalka | Alex Horley-Orlandelli | White | U | Guildpact |
| 30 | Martyred Rusalka | Alex Horley-Orlandelli | White | U | Guild Kit: Orzhov |
| 2 | Martyr's Bond | Seb McKinnon | White | R | Signature Spellbook: Gideon |
| 19 | Martyr's Bond | Ryan Pancoast | White | R | Magic: The Gathering-Commander |
| 13 | Martyr's Cause | Jeff Laubenstein | White | U | Urza's Legacy |
| Martyr's Cry | Jeff A. Menges | White | R | The Dark |
| 19 | Martyr's Cry | Jeff A. Menges | White | R | Masters Edition IV |
| Martyrs of Korlis | Margaret Organ-Kean | White | U | Antiquities |
| 20 | Martyrs of Korlis | Margaret Organ-Kean | White | U | Masters Edition IV |
| 19 | Martyr's Soul | Mila Pesic | White | C | Modern Horizons |
| 212 | Martyr's Soul | Mila Pesic | White | C | Jumpstart 2022 |
| 110 | Martyrs' Tomb | Anthony S. Waters | White/Black | U | Apocalypse |
| 322 | Marut | Campbell White | | C | Commander Legends: Battle for Baldur's Gate |
| 253 | Marvin, Murderous Mimic | Mirko Failoni | | R | Duskmourn: House of Horror |
| 367 | Marvin, Murderous Mimic | Sam Wolfe Connelly | | R | Duskmourn: House of Horror |
| 7 | Marvo, Deep Operative | John Tedrick | Blue/Black | M | Murders at Karlov Manor Commander |
| 315 | Marvo, Deep Operative | John Tedrick | Blue/Black | M | Murders at Karlov Manor Commander |
| 68 | Marwyn, the Nurturer | Chris Rahn | Green | R | Kaldheim Commander |
| 172 | Marwyn, the Nurturer | Chris Rahn | Green | R | Dominaria |
| 138 | Mary O'Kill | Simon Dominic | Black/Red | R | Unstable |
| 61 | Mary Read and Anne Bonny | Wangjie Li | Blue/Red | R | Assassin's Creed |
| 120 | Mary Read and Anne Bonny | Wei Guan | Blue/Red | R | Assassin's Creed |
| 242 | Mary Read and Anne Bonny | Wangjie Li | Blue/Red | R | Assassin's Creed |
| 33 | Masako the Humorless | Ben Thompson | White | R | Champions of Kamigawa |
| 5 | Mascot Exhibition | Randy Vargas | | M | Strixhaven: School of Mages |
| 285 | Mascot Exhibition | Randy Vargas | | M | Strixhaven: School of Mages |
| 110 | Mascot Interception | Bryan Sola | Red | U | Strixhaven: School of Mages |
| 229 | Mask of Avacyn | James Paick | | U | Innistrad |
| 466 | Mask of Avacyn | James Paick | | U | Commander Legends |
| 111 | Mask of Griselbrand | Jason Felix | Black | R | Innistrad: Midnight Hunt |
| 145 | Mask of Griselbrand | Jason Felix | Black | R | Duskmourn: House of Horror Commander |
| 347 | Mask of Griselbrand | Jason Felix | Black | R | Innistrad: Midnight Hunt |
| 151 | Mask of Immolation | Igor Kieryluk | Red | U | Core Set 2020 |
| 138 | Mask of Intolerance | Glen Angus | | R | Apocalypse |
| 11 | Mask of Law and Grace | Kev Walker | White | C | Urza's Destiny |
| 119 | Mask of Memory | Alan Pollack | | U | Planechase |
| 136 | Mask of Memory | Alan Pollack | | U | Phyrexia: All Will Be One Commander |
| 203 | Mask of Memory | Alan Pollack | | U | Mirrodin |
| 243 | Mask of Memory | Roman Tishenin | | U | Warhammer 40,000 Commander |
| 249 | Mask of Memory | Alan Pollack | | U | Commander 2014 |
| 324 | Mask of Memory | Alan Pollack | | U | Commander Legends |
| 25 | Mask of Riddles | Matt Cavotta | Blue/Black | U | Alara Reborn |
| 347 | Mask of Riddles | Matt Cavotta | Blue/Black | U | Streets of New Capenna Commander |
| 201 | Mask of the Jadecrafter | Alessandra Pisano | | U | The Brothers' War |
| Mask of the Mimic | Heather Hudson | Blue | U | Stronghold |
| 28 | Mask of the Schemer | James Paick | Blue | R | Streets of New Capenna Commander |
| 129 | Mask of the Schemer | James Paick | Blue | R | Streets of New Capenna Commander |
| 69 | Masked Admirers | Eric Fortune | Green | R | Kaldheim Commander |
| 127 | Masked Admirers | Eric Fortune | Green | R | Commander Anthology |
| 154 | Masked Admirers | Eric Fortune | Green | U | Modern Masters |
| 183 | Masked Admirers | Eric Fortune | Green | R | Ikoria Commander |
| 206 | Masked Admirers | Eric Fortune | Green | R | Commander 2014 |
| 230 | Masked Admirers | Eric Fortune | Green | R | Lorwyn |
| 201 | Masked Bandits | Micah Epstein | Black/Red/Green | C | Streets of New Capenna |
| 319 | Masked Bandits | Julie Dillon | Black/Red/Green | C | Streets of New Capenna |
| 384 | Masked Bandits | Julie Dillon | Black/Red/Green | C | Streets of New Capenna |
| 113 | Masked Blackguard | Bryan Sola | Black | C | Core Set 2021 |
| 115 | Masked Blackguard | Bryan Sola | Black | C | Ravnica Clue Edition |
| 69 | Masked Gorgon | Matthew D. Wilson | Black | R | Judgment |
| 184 | Masked Vandal | Jason A. Engle | Green | C | Kaldheim |
| 240 | Maskwood Nexus | Jason A. Engle | | R | Kaldheim |
| 279 | Maskwood Nexus | Jason A. Engle | | R | Bloomburrow Commander |
| 299 | Maskwood Nexus | Jason A. Engle | | R | Modern Horizons 3 Commander |
| 369 | Maskwood Nexus | Jason A. Engle | | R | Kaldheim |
| 865 | Maskwood Nexus | Jason A. Engle | | R | Commander Legends: Battle for Baldur's Gate |
| 66 | Mass Appeal | Christopher Moeller | Blue | U | Avacyn Restored |
| 12 | Mass Calcify | Brandon Kitkouski | White | R | Shadowmoor |
| 18 | Mass Calcify | Brandon Kitkouski | White | R | Magic 2015 Core Set |
| 10 | Mass Diminish | E. M. Gist | Blue | R | Commander 2019 |
| 99 | Mass Hysteria | Adam Rex | Red | R | Mirrodin |
| 42 | Mass Manipulation | Anthony Palumbo | Blue | R | Ravnica Allegiance |
| 27 | Mass Mutiny | Sidharth Chaturvedi | Red | R | Explorers of Ixalan |
| 48 | Mass Mutiny | Carl Critchlow | Red | R | Planechase Anthology |
| 48 | Mass Mutiny | Carl Critchlow | Red | R | Planechase 2012 Edition |
| 116 | Mass Mutiny | Carl Critchlow | Red | R | Commander 2013 Edition |
| 174 | Mass Mutiny | Carl Critchlow | Red | R | Outlaws of Thunder Junction Commander |
| 88 | Mass of Ghouls | Lucio Parrillo | Black | C | Future Sight |
| 122 | Mass of Ghouls | Lucio Parrillo | Black | C | Time Spiral Remastered |
| 156 | Mass of Ghouls | Lucio Parrillo | Black | C | Tenth Edition |
| 64 | Mass Polymorph | Christopher Moeller | Blue | R | Magic 2011 |
| 15 | Mass Production | Rémi Jacquot | White | U | The Brothers' War |
| 58 | Massacre | Pete Venters | Black | U | Nemesis |
| 83 | Massacre Girl | Chris Rallis | Black | R | Ravnica Remastered |
| 99 | Massacre Girl | Chris Rallis | Black | R | War of the Spark |
| 140 | Massacre Girl | Chris Rallis | Black | R | Outlaws of Thunder Junction Commander |
| 146 | Massacre Girl | Chris Rallis | Black | R | Duskmourn: House of Horror Commander |
| 328 | Massacre Girl | Chris Rallis | Black | R | Ravnica Remastered |
| 425 | Massacre Girl | 緑QN/MIDQN | Black | R | Ravnica Remastered |
| 94 | Massacre Girl, Known Killer | Billy Christian | Black | M | Murders at Karlov Manor |
| 344 | Massacre Girl, Known Killer | Jack Hughes | Black | M | Murders at Karlov Manor |
| 380 | Massacre Girl, Prime Killer | Jack Hughes | Black | M | Murders at Karlov Manor |
| 46 | Massacre Wurm | Jason Chan | Black | M | Mirrodin Besieged |
| 114 | Massacre Wurm | Jason Chan | Black | M | Core Set 2021 |
| 130 | Massacre Wurm | Jason Chan | Black | M | Murders at Karlov Manor Commander |
| 147 | Massacre Wurm | Jason Chan | Black | M | Duskmourn: House of Horror Commander |
| 256 | Massacre Wurm | Jason Chan | Black | M | March of the Machine Commander |
| 316 | Massacre Wurm | Kekai Kotaki | Black | M | Core Set 2021 |
| 441 | Massacre Wurm | Jason Chan | Black | M | Jumpstart 2022 |
| 714 | Massacre Wurm | Jason Chan | Black | M | Magic: The Gathering Foundations |
| 208 | Massive Might | Iris Compiet | Green | C | Innistrad: Crimson Vow |
| 100 | Massive Raid | Zoltan Boros | Red | C | Gatecrash |
| 32 | Master Apothecary | Terese Nielsen | White | R | Odyssey |