| 191 | Monstrous Emergence | Loïc Canavaggia | Green | C | Duskmourn: House of Horror |
| Monstrous Growth | Una Fricker | Green | C | Starter 2000 |
| Monstrous Growth | Una Fricker | Green | C | Portal Second Age |
| Monstrous Growth | Dan Frazier | Green | C | Portal |
| Monstrous Growth | Dan Frazier | Green | C | Portal |
| 132 | Monstrous Growth | Una Fricker | Green | C | Starter 1999 |
| 258 | Monstrous Growth | Ron Spencer | Green | C | Seventh Edition |
| 266 | Monstrous Growth | Ron Spencer | Green | C | Eighth Edition |
| 89 | Monstrous Hound | Dermot Power | Red | R | Exodus |
| 89 | Monstrous Hound | Dermot Power | Red | R | Promo set for Gatherer |
| 116 | Monstrous Onslaught | Slawomir Maniak | Green | U | Aether Revolt |
| 169 | Monstrous Onslaught | Slawomir Maniak | Green | U | Kaladesh Remastered |
| 244 | Monstrous Onslaught | Slawomir Maniak | Green | U | Commander Legends |
| 142 | Monstrous Rage | Borja Pindado | Red | U | Wilds of Eldraine |
| 166 | Monstrous Step | Chris Seaman | Green | U | Ikoria: Lair of Behemoths |
| 162 | Monstrous Vortex | Deruchenko Alexander | Green | U | Modern Horizons 3 |
| 427 | Monstrous Vortex | Deruchenko Alexander | Green | U | Modern Horizons 3 |
| 98 | Monstrous War-Leech | Christopher Burdett | Black | U | Dominaria United |
| 233 | Monument to Perfection | Igor Kieryluk | | R | Phyrexia: All Will Be One |
| 396 | Monument to Perfection | Igor Kieryluk | | R | Phyrexia: All Will Be One |
| 24 | Monumental Corruption | Sergey Glushakov | Black | R | Phyrexia: All Will Be One Commander |
| 34 | Monumental Corruption | Sergey Glushakov | Black | R | Phyrexia: All Will Be One Commander |
| 222 | Monumental Henge | Steven Belledin | | R | Modern Horizons 3 |
| 354 | Monumental Henge | Clint Lockwood | | R | Modern Horizons 3 |
| 78 | Moodmark Painter | Scott Murphy | Black | C | Guilds of Ravnica |
| 445 | Moodmark Painter | Scott Murphy | Black | C | Jumpstart 2022 |
| 69 | Moon Heron | Charles Urbach | Blue | C | Innistrad |
| Moon Sprite | Terese Nielsen | Green | U | Starter 2000 |
| Moon Sprite | Terese Nielsen | Green | U | Portal |
| 133 | Moon Sprite | Terese Nielsen | Green | U | Starter 1999 |
| 59 | Moonblade Shinobi | Taylor Ingvarsson | Blue | C | Modern Horizons |
| 26 | Moon-Blessed Cleric | Marta Nael | White | U | Adventures in the Forgotten Realms |
| 69 | Moon-Blessed Cleric | Mark Poole | White | U | Duskmourn: House of Horror Commander |
| 46 | Moonbow Illusionist | Dan Frazier | Blue | C | Saviors of Kamigawa |
| 67 | Moon-Circuit Hacker | Tia Masic | Blue | C | Kamigawa: Neon Dynasty |
| 334 | Moon-Circuit Hacker | SS39 | Blue | C | Kamigawa: Neon Dynasty |
| 10 | Moon-Eating Dog | Tingting Yeh | Blue | U | Global Series: Jiang Yanggu and Mu Yanling |
| 68 | Moonfolk Puzzlemaker | Miguel Mercado | Blue | C | Kamigawa: Neon Dynasty |
| 324 | Moonfolk Puzzlemaker | Miguel Mercado | Blue | C | Jumpstart 2022 |
| 67 | Moonglove Changeling | Wayne England | Black | C | Morningtide |
| 24 | Moonglove Extract | Terese Nielsen | | C | Duel Decks Anthology, Elves vs. Goblins |
| 24 | Moonglove Extract | Terese Nielsen | | C | Duel Decks: Elves vs. Goblins |
| 67 | Moonglove Extract | Terese Nielsen | | C | Duel Decks: Elspeth vs. Tezzeret |
| 222 | Moonglove Extract | Terese Nielsen | | C | Iconic Masters |
| 258 | Moonglove Extract | Terese Nielsen | | C | Lorwyn |
| 126 | Moonglove Winnower | William O'Connor | Black | C | Lorwyn |
| 143 | Moonhold | Mike Dringenberg | White/Red | U | Eventide |
| 68 | Moonlace | Mike Dringenberg | Blue | R | Time Spiral |
| 95 | Moonlight Bargain | Nick Percival | Black | R | Ravnica: City of Guilds |
| 114 | Moonlight Bargain | Nick Percival | Black | R | Commander 2018 |
| 29 | Moonlight Geist | Dan Scott | White | C | Avacyn Restored |
| 205 | Moonlight Hunt | Joseph Meehan | Green | C | Shadows Over Innistrad Remastered |
| 219 | Moonlight Hunt | Joseph Meehan | Green | U | Shadows over Innistrad |
| 692 | Moonlight Hunt | Joseph Meehan | Green | U | Jumpstart 2022 |
| 212 | Moonlit Ambusher | Alexander Mokhov | Green | U | Innistrad: Crimson Vow |
| 57 | Moonlit Scavengers | Miranda Meeks | Blue | C | Throne of Eldraine |
| 16 | Moonlit Strider | John Avon | White | C | Betrayers of Kamigawa |
| 27 | Moonlit Strider | John Avon | White | C | Modern Masters 2015 Edition |
| 29 | Moonlit Wake | Greg & Tim Hildebrandt | White | U | Mercadian Masques |
| 54 | Moonmist | Ryan Yee | Green | C | Shadows of the Past |
| 195 | Moonmist | Ryan Yee | Green | C | Innistrad |
| 7 | Moonrage Brute | Karl Kopinski | Red | R | Innistrad: Midnight Hunt |
| 148 | Moonrager's Slash | Lars Grant-West | Red | C | Innistrad: Midnight Hunt |
| 276 | Moonring Island | Brandon Kitkouski | | U | Shadowmoor |
| 262 | Moonring Mirror | Christopher Rush | | R | Champions of Kamigawa |
| 226 | Moonrise Cleric | Simon Dominic | White/Black | C | Bloomburrow |
| 184 | Moonrise Intruder | Daarken | Red | U | Shadows Over Innistrad Remastered |
| 190 | Moonrise Intruder | Daarken | Red | U | Shadows over Innistrad |
| 125 | Moonscarred Werewolf | Cynthia Sheppard | Green | C | Dark Ascension |
| 84 | Moonshae Pixie | Edgar Sánchez Hidalgo | Blue | U | Commander Legends: Battle for Baldur's Gate |
| 21 | Moonshaker Cavalry | Aldo Dominguez | White | M | Wilds of Eldraine |
| 325 | Moonshaker Cavalry | Aldo Dominguez | White | M | Wilds of Eldraine |
| 255 | Moonsilver Key | Joseph Meehan | | U | Innistrad: Midnight Hunt |
| 118 | Moonsilver Spear | James Paick | | R | Game Night: Free-For-All |
| 212 | Moonsilver Spear | James Paick | | R | Adventures in the Forgotten Realms Commander |
| 217 | Moonsilver Spear | James Paick | | R | Avacyn Restored |
| 251 | Moonsilver Spear | James Paick | | R | Commander 2014 |
| 69 | Moonsnare Prototype | Fariba Khamseh | Blue | C | Kamigawa: Neon Dynasty |
| 70 | Moonsnare Specialist | Lie Setiawan | Blue | C | Kamigawa: Neon Dynasty |
| 335 | Moonsnare Specialist | 百瀬寿/HISASHI MOMOSE | Blue | C | Kamigawa: Neon Dynasty |
| 19 | Moonstone Eulogist | Yohann Schepacz | Black | R | Bloomburrow Commander |
| 54 | Moonstone Eulogist | Yohann Schepacz | Black | R | Bloomburrow Commander |
| 101 | Moonstone Harbinger | Kevin Sidharta | Black | U | Bloomburrow |
| 99 | Moonveil Dragon | Todd Lockwood | Red | M | Dark Ascension |
| 149 | Moonveil Regent | Joshua Raphael | Red | M | Innistrad: Midnight Hunt |
| 357 | Moonveil Regent | Joshua Raphael | Red | M | Innistrad: Midnight Hunt |
| 20 | Moonwing Moth | Franz Vohwinkel | White | C | Saviors of Kamigawa |
| Moor Fiend | Anson Maddocks | Black | C | Ice Age |
| Moorish Cavalry | Dameon Willich | White | C | Arabian Nights |
| Moorish Cavalry | Dameon Willich | White | C | Arabian Nights |
| 11 | Moorish Cavalry | Dameon Willich | White | S | Time Spiral "Timeshifted" |
| 27 | Moorland Drifter | Ryan Yee | White | C | Shadows over Innistrad |
| 175 | Moorland Haunt | James Paick | | R | Innistrad: Crimson Vow Commander |
| 244 | Moorland Haunt | James Paick | | R | Innistrad |
| 15 | Moorland Inquisitor | David Palumbo | White | C | Arena Base Set |
| 16 | Moorland Inquisitor | David Palumbo | White | C | Duel Decks: Blessed vs. Cursed |
| 30 | Moorland Inquisitor | David Palumbo | White | C | Avacyn Restored |
| 31 | Moorland Inquisitor | David Palumbo | White | C | Core Set 2020 |
| 7 | Moorland Rescuer | Justyna Gil | White | R | Innistrad: Midnight Hunt Commander |
| 45 | Moorland Rescuer | Justyna Gil | White | R | Innistrad: Midnight Hunt Commander |
| 24 | Moradin's Disciples | Justine Cruz | White | U | Alchemy Horizons: Baldur's Gate |
| Morale | Mark Poole | White | C | Fourth Edition |
| Morale | Mark Poole | White | C | The Dark |
| 70 | Morality Shift | Jerry Tiritilli | Black | R | Judgment |
| 154 | Moratorium Stone | Martina Pilcerova | | R | Guildpact |
| 150 | Moraug, Fury of Akoum | Rudy Siswanto | Red | M | Zendikar Rising |
| 300 | Moraug, Fury of Akoum | Dominik Mayer | Red | M | Zendikar Rising |
| 94 | Morbid Bloom | Trevor Claxton | Black/Green | U | Alara Reborn |
| 94 | Morbid Curiosity | Kieran Yanner | Black | U | Kaladesh |
| 149 | Morbid Curiosity | Kieran Yanner | Black | U | Battlebond |
| 150 | Morbid Hunger | Eric Peterson | Black | C | Odyssey |
| 32 | Morbid Opportunist | Chris Seaman | Black | M | Special Guests |
| 113 | Morbid Opportunist | Tyler Walpole | Black | U | Innistrad: Midnight Hunt |
| 142 | Morbid Opportunist | Tyler Walpole | Black | U | Outlaws of Thunder Junction Commander |
| 148 | Morbid Opportunist | Tyler Walpole | Black | U | Duskmourn: House of Horror Commander |
| 183 | Morbid Opportunist | Tyler Walpole | Black | U | Bloomburrow Commander |
| 186 | Morbid Opportunist | Lorenzo Mastroianni | Black | U | Magic The Gathering—Fallout |
| 47 | Morbid Plunder | Mike Bierek | Black | C | Mirrodin Besieged |
| 58 | Mordant Dragon | Scott Chou | Red | R | Duel Decks: Knights vs. Dragons |
| 85 | Mordant Dragon | Scott Chou | Red | R | Worldwake |
| 64 | Mordenkainen | Ryan Pancoast | Blue | M | Adventures in the Forgotten Realms |
| 283 | Mordenkainen | Donato Giancola | Blue | M | Adventures in the Forgotten Realms |
| 65 | Mordenkainen's Polymorph | Oriana Menendez | Blue | C | Adventures in the Forgotten Realms |
| 96 | Mordor Muster | Pavel Kolomeyets | Black | C | The Lord of the Rings: Tales of Middle Earth |
| 547 | Mordor Muster | Pavel Kolomeyets | Black | C | The Lord of the Rings: Tales of Middle Earth |
| 512 | Mordor on the March | Campbell White | Black/Red | R | The Lord of the Rings: Tales of Middle Earth Commander |
| 97 | Mordor Trebuchet | Alexander Forssberg | Black | C | The Lord of the Rings: Tales of Middle Earth |
| 548 | Mordor Trebuchet | Alexander Forssberg | Black | C | The Lord of the Rings: Tales of Middle Earth |
| 40 | More or Less | Chris Seaman | Blue | U | Unstable |
| 86 | Morgue Burst | Raymond Swanland | Black/Red | C | Dragon's Maze |
| 151 | Morgue Theft | Justin Sweet | Black | C | Odyssey |
| Morgue Thrull | Robert Bliss | Black | C | Stronghold |
| 46 | Morgue Toad | Franz Vohwinkel | Black | C | Planeshift |
| 47 | Morgue Toad | Franz Vohwinkel | Black | C | Duel Decks: Ajani vs. Nicol Bolas |
| 98 | Morgul-Knife Wound | Axel Sauerwald | Black | C | The Lord of the Rings: Tales of Middle Earth |
| 549 | Morgul-Knife Wound | Axel Sauerwald | Black | C | The Lord of the Rings: Tales of Middle Earth |
| 138 | Moria Marauder | Andrea Piparo | Red | R | The Lord of the Rings: Tales of Middle Earth |
| 362 | Moria Marauder | Andrea Piparo | Red | R | The Lord of the Rings: Tales of Middle Earth |
| 589 | Moria Marauder | Andrea Piparo | Red | R | The Lord of the Rings: Tales of Middle Earth |
| 63 | Moria Scavenger | Igor Krstic | Black/Red | R | The Lord of the Rings: Tales of Middle Earth Commander |
| 145 | Moria Scavenger | Igor Krstic | Black/Red | R | The Lord of the Rings: Tales of Middle Earth Commander |
| 470 | Moria Scavenger | Igor Krstic | Black/Red | R | The Lord of the Rings: Tales of Middle Earth Commander |
| Morinfen | Carl Critchlow | Black | R | Weatherlight |
| 70 | Moriok Reaver | Marc Simonetti | Black | C | Scars of Mirrodin |
| 178 | Moriok Replica | Zoltan Boros & Gabor Szikszai | | C | Scars of Mirrodin |
| 54 | Moriok Rigger | Wayne England | Black | R | Fifth Dawn |
| 68 | Moriok Scavenger | Puddnhead | Black | C | Mirrodin |
| 223 | Moritte of the Frost | Eric Deschamps | Blue/Green | U | Kaldheim |
| 328 | Moritte of the Frost | Poison Project | Blue/Green | U | Kaldheim |
| 99 | Morkrut Banshee | Svetlin Velinov | Black | U | Double Masters |
| 110 | Morkrut Banshee | Svetlin Velinov | Black | U | Innistrad |
| 118 | Morkrut Banshee | Svetlin Velinov | Black | U | Magic: The Gathering—Conspiracy |
| 121 | Morkrut Banshee | Jodie Muir | Black | U | Jumpstart 2022 |
| 149 | Morkrut Banshee | Svetlin Velinov | Black | U | Commander 2014 |
| 114 | Morkrut Behemoth | Milivoj Ćeran | Black | C | Innistrad: Midnight Hunt |
| 125 | Morkrut Necropod | Alejandro Mirabal | Black | C | Shadows Over Innistrad Remastered |
| 125 | Morkrut Necropod | Alejandro Mirabal | Black | U | Shadows over Innistrad |
| 28 | Morning Apparition | Greg Opalinski | White | C | Innistrad: Midnight Hunt |
| 10 | Morningtide | Tony Szczudlo | White | R | Torment |
| 18 | Moroii | Dan Scott | Blue/Black | U | Guild Kit: Dimir |
| 51 | Moroii | Dan Scott | Blue/Black | U | Duel Decks: Ajani vs. Nicol Bolas |
| 173 | Moroii | Dan Scott | Blue/Black | U | Modern Masters 2017 Edition |
| 202 | Moroii | Dan Scott | Blue/Black | U | Ravnica Remastered |
| 216 | Moroii | Dan Scott | Blue/Black | U | Ravnica: City of Guilds |
| 1 | Morophon, the Boundless | Victor Adame Minguez | | M | Modern Horizons |
| 3 | Morophon, the Boundless | Victor Adame Minguez | | M | Commander Masters |
| 157 | Morophon, the Boundless | Victor Adame Minguez | | M | Modern Horizons 3 Commander |
| 453 | Morophon, the Boundless | Victor Adame Minguez | | M | Commander Masters |
| 669 | Morophon, the Boundless | Jack Hughes | | M | Commander Masters |
| 1058 | Morophon, the Boundless | Jack Hughes | | M | Commander Masters |
| 17 | Morphic Pool | Steven Belledin | | M | Zendikar Rising Expeditions |
| 83 | Morphic Pool | Grzegorz Rutkowski | | R | Battlebond |
| 357 | Morphic Pool | Chris Ostrowski | | R | Commander Legends: Battle for Baldur's Gate |
| 603 | Morphic Pool | Chris Ostrowski | | R | Commander Legends: Battle for Baldur's Gate |
| 81 | Morphling | rk post | Blue | M | Vintage Masters |
| 85 | Morphling | rk post | Blue | R | Urza's Saga |
| 68 | Morsel Theft | Darrell Riche | Black | C | Morningtide |
| 212 | Morselhoarder | Anthony S. Waters | Red/Green | C | Shadowmoor |
| 3 | Morska, Undersea Sleuth | Ekaterina Burmak | White/Blue/Green | M | Murders at Karlov Manor Commander |
| 317 | Morska, Undersea Sleuth | Ekaterina Burmak | White/Blue/Green | M | Murders at Karlov Manor Commander |
| 71 | Mortal Combat | Mike Ploog | Black | R | Torment |
| 160 | Mortal Combat | Mike Ploog | Black | R | Tenth Edition |