| 45 | Mogg War Marshal | Wayne England | Red | C | Duel Decks Anthology, Elves vs. Goblins |
| 45 | Mogg War Marshal | Wayne England | Red | C | Duel Decks: Elves vs. Goblins |
| 122 | Mogg War Marshal | Wayne England | Red | C | Modern Masters |
| 131 | Mogg War Marshal | Jesper Ejsing | Red | C | Dominaria Remastered |
| 139 | Mogg War Marshal | Jesper Ejsing | Red | C | Eternal Masters |
| 170 | Mogg War Marshal | Wayne England | Red | C | Time Spiral |
| 176 | Mogg War Marshal | Wayne England | Red | C | Time Spiral Remastered |
| 326 | Mogg War Marshal | Jesper Ejsing | Red | C | Dominaria Remastered |
| 78 | Mogis, God of Slaughter | Jason A. Engle | Black/Red | M | Secret Lair Drop |
| 89 | Mogis, God of Slaughter | Chase Stone | Black/Red | M | Duskmourn: House of Horror Commander |
| 151 | Mogis, God of Slaughter | Peter Mohrbacher | Black/Red | M | Born of the Gods |
| 107 | Mogis's Favor | Uriah Voth | Black | C | Theros Beyond Death |
| 97 | Mogis's Marauder | Chase Stone | Black | U | Theros |
| 104 | Mogis's Warhound | John Severin Brassell | Red | U | Journey into Nyx |
| 7 | Moira and Teshar | Josh Hass | White/Black | M | March of the Machine Commander |
| 93 | Moira and Teshar | Josh Hass | White/Black | M | March of the Machine Commander |
| 60 | Mold Shambler | Karl Kopinski | Green | C | Duel Decks: Jace vs. Vraska |
| 156 | Mold Shambler | Karl Kopinski | Green | C | Commander 2013 Edition |
| 169 | Mold Shambler | Karl Kopinski | Green | C | Zendikar |
| 125 | Molder Beast | Randis Albion | Green | C | Scars of Mirrodin |
| 243 | Molder Beast | Randis Albion | Green | C | Commander Legends |
| 125 | Molder Slug | Heather Hudson | Green | R | Mirrodin |
| 83 | Moldgraf Monstrosity | Nino Is | Green | R | Duskmourn: House of Horror Commander |
| 156 | Moldgraf Monstrosity | Tomasz Jedruszek | Green | R | Commander 2018 |
| 194 | Moldgraf Monstrosity | Tomasz Jedruszek | Green | R | Innistrad |
| 218 | Moldgraf Scavenger | Tomasz Jedruszek | Green | C | Shadows over Innistrad |
| Mole Worms | Adrian Smith | Black | U | Fifth Edition |
| Mole Worms | Daniel Gelon | Black | U | Ice Age |
| 64 | Molimo, Maro-Sorcerer | Mark Zug | Green | R | Archenemy |
| 199 | Molimo, Maro-Sorcerer | Mark Zug | Green | R | Invasion |
| 280 | Molimo, Maro-Sorcerer | Mark Zug | Green | R | Tenth Edition |
| 305 | Molimo, Maro-Sorcerer | Mark Zug | Green | U | Commander Masters |
| 430 | Molimo, Maro-Sorcerer | Mark Zug | Green | R | Commander Legends |
| 149 | Molten Blast | Izzy | Red | C | Zendikar Rising |
| 234 | Molten Collapse | Kasia ‘Kafis' Zielińska | Black/Red | R | The Lost Caverns of Ixalan |
| 342 | Molten Collapse | Mónica Robles Corzo aka Monarobot | Black/Red | R | The Lost Caverns of Ixalan |
| 102 | Molten Disaster | Ittoku | Red | R | Future Sight |
| 117 | Molten Disaster | Ittoku | Red | R | Commander 2013 Edition |
| 123 | Molten Disaster | Ittoku | Red | R | Modern Masters |
| 54 | Molten Echoes | Zoltan Boros | Red | R | Ikoria Commander |
| 148 | Molten Echoes | Zoltan Boros | Red | R | Innistrad: Crimson Vow Commander |
| 139 | Molten Monstrosity | Manuel Castañón | Red | C | Dominaria United |
| 130 | Molten Nursery | Raymond Swanland | Red | U | Battle for Zendikar |
| 98 | Molten Psyche | Ryan Yee | Red | R | Scars of Mirrodin |
| 136 | Molten Sentry | Kev Walker | Red | R | Ravnica: City of Guilds |
| 260 | Molten Slagheap | Daren Bader | | U | Commander Anthology |
| 276 | Molten Slagheap | Daren Bader | | U | Time Spiral |
| 282 | Molten Slagheap | Daren Bader | | U | Time Spiral Remastered |
| 282 | Molten Slagheap | Daren Bader | | U | Magic: The Gathering-Commander |
| 284 | Molten Slagheap | Anthony Devine | | U | Warhammer 40,000 Commander |
| 306 | Molten Slagheap | Daren Bader | | U | Commander 2013 Edition |
| 88 | Moltensteel Dragon | James Ryman | Red | R | New Phyrexia |
| 177 | Molten-Tail Masticore | Whit Brachna | | M | Scars of Mirrodin |
| 138 | Molting Skin | Jeremy Jarvis | Green | U | Saviors of Kamigawa |
| 80 | Molting Snakeskin | YW Tang | Black | C | Khans of Tarkir |
| 16 | Moment of Heroism | Christopher Moeller | White | C | Archenemy: Nicol Bolas |
| 24 | Moment of Heroism | Christopher Moeller | White | C | Innistrad |
| 25 | Moment of Heroism | Christopher Moeller | White | C | Duel Decks: Heroes vs. Monsters |
| 30 | Moment of Heroism | Christopher Moeller | White | C | Core Set 2020 |
| 74 | Moment of Heroism | Christopher Moeller | White | C | Magic: The Gathering—Conspiracy |
| 124 | Moment of Heroism | Christopher Moeller | White | C | Jumpstart |
| 28 | Moment of Silence | Christopher Moeller | White | C | Mercadian Masques |
| 173 | Momentous Fall | Tomasz Jedruszek | Green | R | Commander 2019 |
| 197 | Momentous Fall | Tomasz Jedruszek | Green | R | Rise of the Eldrazi |
| 411 | Momentous Fall | Tomasz Jedruszek | Green | R | Jumpstart |
| 251 | Moment's Peace | Rebecca Guay | Green | C | Odyssey |
| 9 | Momir Vig, Simic Visionary | Victor Adame Minguez | Blue/Green | M | From the Vault: Lore |
| 118 | Momir Vig, Simic Visionary | Zoltan Boros & Gabor Szikszai | Blue/Green | R | Dissension |
| 119 | Momir Vig, Simic Visionary | Victor Adame Minguez | Blue/Green | R | Guild Kit: Simic |
| 47 | Monastery Flock | John Avon | Blue | C | Khans of Tarkir |
| 63 | Monastery Loremaster | Ryan Alexander Lee | Blue | C | Dragons of Tarkir |
| 20 | Monastery Mentor | Magali Villeneuve | White | M | Fate Reforged |
| 21 | Monastery Mentor | Magali Villeneuve | White | M | Double Masters 2022 |
| 28 | Monastery Mentor | Brian Valeza | White | M | March of the Machine |
| 347 | Monastery Mentor | Brian Valeza | White | M | March of the Machine |
| 420 | Monastery Mentor | Magali Villeneuve | White | M | Double Masters 2022 |
| 35 | Monastery Raid | Alexandre Honoré | Red | U | Assassin's Creed |
| 217 | Monastery Raid | Alexandre Honoré | Red | U | Assassin's Creed |
| 43 | Monastery Siege | Mark Winters | Blue | R | Fate Reforged |
| 88 | Monastery Siege | Mark Winters | Blue | R | Commander 2017 |
| 118 | Monastery Swiftspear | Steve Argyle | Red | U | Khans of Tarkir |
| 119 | Monastery Swiftspear | Steve Argyle | Red | C | Double Masters 2022 |
| 140 | Monastery Swiftspear | Steve Argyle | Red | U | Iconic Masters |
| 144 | Monastery Swiftspear | Gabor Szikszai | Red | U | The Brothers' War |
| 216 | Monastery Swiftspear | Brandi Milne | Red | R | Secret Lair Drop |
| 349 | Monastery Swiftspear | Steve Argyle | Red | B | Time Spiral Remastered |
| 362 | Monastery Swiftspear | Eric Velhagen | Red | C | Double Masters 2022 |
| 23 | Mondrak, Glory Dominus | Jason A. Engle | White | M | Phyrexia: All Will Be One |
| 299 | Mondrak, Glory Dominus | Flavio Girón | White | M | Phyrexia: All Will Be One |
| 98 | Mondronen Shaman | Mike Sass | Red | R | Dark Ascension |
| 228 | Monk Class | Randy Vargas | White/Blue | R | Adventures in the Forgotten Realms |
| 20 | Monk Idealist | Daren Bader | White | U | Urza's Saga |
| 21 | Monk Idealist | Daren Bader | White | C | Eternal Masters |
| 76 | Monk Idealist | Daren Bader | White | U | Commander 2015 |
| 20 | Monk Realist | Daren Bader | White | C | Magic: The Gathering-Commander |
| 21 | Monk Realist | Daren Bader | White | C | Urza's Saga |
| 229 | Monoskelion | Jason A. Engle | | U | Modern Horizons 2 |
| 429 | Monoskelion | Jason A. Engle | | U | Modern Horizons 2 |
| Monsoon | NéNé Thomas | Red/Green | R | Ice Age |
| Mons's Goblin Raiders | Pete Venters | Red | C | Starter 2000 |
| Mons's Goblin Raiders | Pete Venters | Red | C | Fifth Edition |
| Mons's Goblin Raiders | Jeff A. Menges | Red | C | Fourth Edition |
| Mons's Goblin Raiders | Jeff A. Menges | Red | C | Revised Edition |
| Mons's Goblin Raiders | Jeff A. Menges | Red | C | Unlimited Edition |
| Mons's Goblin Raiders | Jeff A. Menges | Red | C | Limited Edition Beta |
| Mons's Goblin Raiders | Jeff A. Menges | Red | C | Limited Edition Alpha |
| 112 | Mons's Goblin Raiders | Pete Venters | Red | R | Starter 1999 |
| 82 | Mons's Goblin Waiters | Pete Venters | Red | C | Unhinged |
| 217 | Monster Manual | David Gaillet | Green | R | Alchemy Horizons: Baldur's Gate |
| 242 | Monster Manual | David Gaillet | Green | R | Commander Legends: Battle for Baldur's Gate |
| 591 | Monster Manual | David Gaillet | Green | R | Commander Legends: Battle for Baldur's Gate |
| 70 | Monstrify | Lars Grant-West | Green | C | Eventide |
| 22 | Monstrosity of the Lake | Ben Wootten | Blue | R | The Lord of the Rings: Tales of Middle Earth Commander |
| 105 | Monstrosity of the Lake | Ben Wootten | Blue | R | The Lord of the Rings: Tales of Middle Earth Commander |
| 424 | Monstrosity of the Lake | Ben Wootten | Blue | R | The Lord of the Rings: Tales of Middle Earth Commander |
| 43 | Monstrous Carabid | Pete Venters | Black/Red | C | Alara Reborn |
| 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 |
| 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 |
| 29 | Moonlight Geist | Dan Scott | White | C | Avacyn Restored |
| 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 |
| 54 | Moonmist | Ryan Yee | Green | C | Shadows of the Past |
| 195 | Moonmist | Ryan Yee | Green | C | Innistrad |
| 148 | Moonrager's Slash | Lars Grant-West | Red | C | Innistrad: Midnight Hunt |
| 276 | Moonring Island | Brandon Kitkouski | | U | Shadowmoor |
| 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 |
| 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" |
| 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 |
| 70 | Morality Shift | Jerry Tiritilli | Black | R | Judgment |
| 154 | Moratorium Stone | Martina Pilcerova | | R | Guildpact |
| 94 | Morbid Curiosity | Kieran Yanner | Black | U | Kaladesh |
| 149 | Morbid Curiosity | Kieran Yanner | Black | U | Battlebond |
| 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 |
| 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 |
| 40 | More or Less | Chris Seaman | Blue | U | Unstable |
| 86 | Morgue Burst | Raymond Swanland | Black/Red | C | Dragon's Maze |
| 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 |
| 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 |
| 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 |
| 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 |