| 113 | Mukotai Soulripper | Eddie Mendoza | Black | R | Kamigawa: Neon Dynasty |
| 381 | Mukotai Soulripper | T-TRACK | Black | R | Kamigawa: Neon Dynasty |
| 458 | Mukotai Soulripper | Eddie Mendoza | Black | R | Kamigawa: Neon Dynasty |
| 198 | Mul Daya Channelers | Jason Chan | Green | R | Rise of the Eldrazi |
| Mulch | Rebecca Guay | Green | C | Stronghold |
| 128 | Mulch | Christopher Moeller | Green | C | Commander Anthology |
| 181 | Mulch | Rebecca Guay | Green | C | Tempest Remastered |
| 189 | Mulch | Lucas Graciano | Green | C | Duskmourn: House of Horror Commander |
| 191 | Mulch | Christopher Moeller | Green | C | Commander 2015 |
| 196 | Mulch | Christopher Moeller | Green | C | Innistrad |
| 210 | Mulch | Lucas Graciano | Green | C | Innistrad: Crimson Vow |
| 199 | Muldrotha, the Gravetide | Jason Rainville | Blue/Black/Green | M | Dominaria |
| 258 | Muldrotha, the Gravetide | Jason Rainville | Blue/Black/Green | M | Double Masters 2022 |
| 384 | Muldrotha, the Gravetide | Eric Velhagen | Blue/Black/Green | M | Double Masters 2022 |
| 528 | Muldrotha, the Gravetide | Jason Rainville | Blue/Black/Green | M | Double Masters 2022 |
| 528 | Muldrotha, the Gravetide | Jason Rainville | Blue/Black/Green | M | Commander Legends |
| 12 | Mulldrifter | Eric Fortune | Blue | C | Duel Decks Anthology, Jace vs. Chandra |
| 12 | Mulldrifter | Eric Fortune | Blue | C | Duel Decks: Jace vs. Chandra |
| 42 | Mulldrifter | Eric Fortune | Blue | U | Kaldheim Commander |
| 47 | Mulldrifter | Eric Fortune | Blue | C | Commander Anthology 2018 |
| 51 | Mulldrifter | Eric Fortune | Blue | U | Modern Masters 2015 Edition |
| 52 | Mulldrifter | Eric Fortune | Blue | C | Magic: The Gathering-Commander |
| 54 | Mulldrifter | Eric Fortune | Blue | U | Modern Masters |
| 60 | Mulldrifter | Eric Fortune | Blue | U | Double Masters 2022 |
| 76 | Mulldrifter | Eric Fortune | Blue | C | Lorwyn |
| 87 | Mulldrifter | Eric Fortune | Blue | U | Adventures in the Forgotten Realms Commander |
| 88 | Mulldrifter | Eric Fortune | Blue | C | Jumpstart: Historic Horizons |
| 94 | Mulldrifter | Eric Fortune | Blue | U | Commander 2018 |
| 97 | Mulldrifter | Eric Fortune | Blue | U | Commander 2015 |
| 111 | Mulldrifter | Eric Fortune | Blue | U | Murders at Karlov Manor Commander |
| 117 | Mulldrifter | Eric Fortune | Blue | U | Ikoria Commander |
| 118 | Mulldrifter | Eric Fortune | Blue | C | Commander 2014 |
| 311 | Mulldrifter | Eric Fortune | Blue | B | Time Spiral Remastered |
| 349 | Mulldrifter | Jeff Miracola | Blue | U | Double Masters 2022 |
| 400 | Mulldrifter | Eric Fortune | Blue | U | Commander Legends |
| 639 | Mulldrifter | Eric Fortune | Blue | U | Commander Legends |
| 107 | Multani, Maro-Sorcerer | Daren Bader | Green | R | Urza's Legacy |
| 75 | Multani, Yavimaya's Avatar | Ryan Yee | Green | M | Zendikar Rising Commander |
| 174 | Multani, Yavimaya's Avatar | Ryan Yee | Green | M | Dominaria |
| 190 | Multani, Yavimaya's Avatar | Ryan Yee | Green | M | Duskmourn: House of Horror Commander |
| 108 | Multani's Acolyte | Edward P. Beard, Jr. | Green | C | Urza's Legacy |
| 114 | Multani's Decree | Eric Peterson | Green | C | Urza's Destiny |
| 84 | Multani's Harmony | Darrell Riche | Green | U | Planeshift |
| 109 | Multani's Presence | Scott M. Fischer | Green | U | Urza's Legacy |
| 644 | Multiclass Baldric | Franz Vohwinkel | | R | Commander Legends: Battle for Baldur's Gate |
| 684 | Multiclass Baldric | Franz Vohwinkel | | R | Commander Legends: Battle for Baldur's Gate |
| 223 | Multiform Wonder | Daarken | | R | Kaladesh |
| 117 | Multi-Headed | YW Tang | Green | C | Unstable |
| 48 | Multiple Choice | Campbell White | Blue | R | Strixhaven: School of Mages |
| 298 | Multiple Choice | Campbell White | Blue | R | Strixhaven: School of Mages |
| 325 | Multiple Choice | Campbell White | Blue | R | Jumpstart 2022 |
| 16 | Mummy Paramount | Josu Hernaiz | White | C | Hour of Devastation |
| 215 | Munda, Ambush Leader | Johannes Voss | White/Red | R | Battle for Zendikar |
| 29 | Munda's Vanguard | Steve Prescott | White | R | Oath of the Gatewatch |
| Mundungu | Terese Nielsen | Blue/Black | U | Visions |
| 119 | Mungha Wurm | Greg Staples | Green | R | Prophecy |
| 209 | Munitions Expert | Jesper Ejsing | Black/Red | U | Modern Horizons |
| 146 | Muraganda Petroglyphs | Scott Altmann | Green | R | Future Sight |
| 220 | Muraganda Petroglyphs | Scott Altmann | Green | R | Time Spiral Remastered |
| 172 | Murasa Behemoth | Dave Kendall | Green | C | Modern Horizons |
| 195 | Murasa Brute | Caio Monteiro | Green | C | Zendikar Rising |
| 139 | Murasa Pyromancer | Kekai Kotaki | Red | U | Zendikar |
| 178 | Murasa Ranger | Eric Deschamps | Green | U | Battle for Zendikar |
| 229 | Murasa Rootgrazer | Mathias Kollros | White/Green | U | Zendikar Rising |
| 196 | Murasa Sproutling | Svetlin Velinov | Green | U | Zendikar Rising |
| 16 | Murder | Willem Hampson | Black | U | Outlaws of Thunder Junction Breaking News |
| 47 | Murder | Allen Williams | Black | C | Zendikar Rising Commander |
| 53 | Murder | Tyler Jacobson | Black | U | Arena Base Set |
| 88 | Murder | Yongjae Choi | Black | C | Streets of New Capenna |
| 92 | Murder | Lixin Yin | Black | U | Assassin's Creed |
| 95 | Murder | Isis | Black | C | Murders at Karlov Manor |
| 97 | Murder | Tyler Jacobson | Black | U | Eldritch Moon |
| 98 | Murder | Allen Williams | Black | C | Masters 25 |
| 101 | Murder | Allen Williams | Black | C | Magic 2013 |
| 109 | Murder | Allen Williams | Black | C | Core Set 2020 |
| 110 | Murder | Domenico Cava | Black | C | Duskmourn: House of Horror |
| 110 | Murder | Tyler Jacobson | Black | U | Core Set 2019 |
| 134 | Murder | David Astruga | Black | C | Commander Legends: Battle for Baldur's Gate |
| 134 | Murder | Allen Williams | Black | C | Commander Legends |
| 143 | Murder | Allen Williams | Black | C | Conspiracy: Take the Crown |
| 208 | Murder | Lixin Yin | Black | U | Assassin's Creed |
| 300 | Murder | Richard Wright | Black | C | Murders at Karlov Manor |
| 21 | Murder Investigation | Igor Kieryluk | White | U | Gatecrash |
| 27 | Murder Investigation | Igor Kieryluk | White | U | Magic Origins |
| 219 | Murder Investigation | Igor Kieryluk | White | U | Jumpstart 2022 |
| 19 | Murder of Crows | Drew Baker | Blue | U | Shadows of the Past |
| 66 | Murder of Crows | Drew Baker | Blue | U | Masters 25 |
| 70 | Murder of Crows | Drew Baker | Blue | U | Innistrad |
| 88 | Murder of Crows | Drew Baker | Blue | U | Adventures in the Forgotten Realms Commander |
| 106 | Murder of Crows | Drew Baker | Blue | U | Commander Masters |
| 255 | Murderer's Axe | Winona Nelson | | U | Shadows Over Innistrad Remastered |
| 259 | Murderer's Axe | Winona Nelson | | U | Shadows over Innistrad |
| 61 | Murderous Betrayal | Randy Gallegos | Black | R | Nemesis |
| 147 | Murderous Betrayal | Randy Gallegos | Black | R | Eighth Edition |
| 122 | Murderous Compulsion | David Palumbo | Black | C | Commander 2019 |
| 126 | Murderous Compulsion | David Palumbo | Black | C | Shadows over Innistrad |
| 81 | Murderous Cut | Yohann Schepacz | Black | U | Khans of Tarkir |
| 192 | Murderous Redcap | Dave Allsop | Black/Red | U | Modern Masters |
| 192 | Murderous Redcap | Dave Allsop | Black/Red | U | Shadowmoor |
| 217 | Murderous Redcap | Dave Allsop | Black/Red | U | Ultimate Masters |
| 97 | Murderous Rider | Josh Hass | Black | R | Throne of Eldraine |
| 258 | Murderous Rider | Josh Hass | Black | R | March of the Machine Commander |
| 48 | Murderous Spoils | Adam Rex | Black | U | Darksteel |
| Murk Dwellers | Drew Tucker | Black | C | Fifth Edition |
| Murk Dwellers | Drew Tucker | Black | C | Fourth Edition |
| Murk Dwellers | Drew Tucker | Black | C | The Dark |
| 62 | Murk Strider | Chase Stone | Blue | C | Battle for Zendikar |
| 156 | Murkfiend Liege | Carl Critchlow | Blue/Green | R | Eventide |
| 204 | Murkfiend Liege | Carl Critchlow | Blue/Green | R | Commander Anthology |
| 231 | Murkfiend Liege | Carl Critchlow | Blue/Green | R | Commander 2013 Edition |
| 259 | Murkfiend Liege | Carl Critchlow | Blue/Green | R | Double Masters 2022 |
| 448 | Murkfiend Liege | Carl Critchlow | Blue/Green | R | Commander Legends |
| 529 | Murkfiend Liege | Carl Critchlow | Blue/Green | R | Double Masters 2022 |
| 52 | Murktide Regent | Lucas Graciano | Blue | M | Modern Horizons 2 |
| 337 | Murktide Regent | Lucas Graciano | Blue | M | Modern Horizons 2 |
| 260 | Murkwater Pathway | Daarken | | R | Zendikar Rising |
| 286 | Murkwater Pathway | Johannes Voss | | R | Zendikar Rising |
| 263 | Murky Sewer | Martin de Diego Sádaba | | L | Duskmourn: House of Horror |
| 10 | Murmuration | Xabi Gaztelua | White | R | Bloomburrow Commander |
| 46 | Murmuration | Xabi Gaztelua | White | R | Bloomburrow Commander |
| 11 | Murmuring Bosk | John Avon | | M | From the Vault: Realms |
| 147 | Murmuring Bosk | John Avon | | R | Morningtide |
| 220 | Murmuring Bosk | John Avon | | R | Dominaria United Commander |
| 258 | Murmuring Bosk | John Avon | | R | Commander Anthology 2018 |
| 308 | Murmuring Bosk | John Avon | | R | Commander 2016 |
| 320 | Murmuring Bosk | Antonio José Manzanedo | | R | The Lord of the Rings: Tales of Middle Earth Commander |
| 32 | Murmuring Mystic | Mark Winters | Blue | U | Game Night: Free-For-All |
| 45 | Murmuring Mystic | Mark Winters | Blue | U | Guilds of Ravnica |
| 51 | Murmuring Mystic | Mark Winters | Blue | U | Ravnica Remastered |
| 102 | Murmuring Mystic | Mark Winters | Blue | C | Outlaws of Thunder Junction Commander |
| 107 | Murmuring Mystic | Mark Winters | Blue | C | Commander Masters |
| 118 | Murmuring Mystic | Mark Winters | Blue | U | Ikoria Commander |
| 15 | Murmuring Phantasm | Peter Mohrbacher | Blue | C | Dragon's Maze |
| 157 | Murmuring Phantasm | Peter Mohrbacher | Blue | C | Jumpstart |
| 47 | Murmurs from Beyond | Paolo Parente | Blue | C | Saviors of Kamigawa |
| 53 | Murmurs from Beyond | Parente | Blue | C | Magic: The Gathering-Commander |
| 252 | Muscle Burst | Gary Ruddell | Green | C | Odyssey |
| Muscle Sliver | Richard Kane Ferguson | Green | C | Tempest |
| 9 | Muscle Sliver | Richard Kane Ferguson | Green | C | Premium Deck Series: Slivers |
| 182 | Muscle Sliver | Richard Kane Ferguson | Green | C | Tempest Remastered |
| 46 | Muse Drake | Titus Lunter | Blue | C | Guilds of Ravnica |
| 163 | Muse Vessel | Christopher Rush | | R | Dissension |
| 28 | Muse Vortex | Kieran Yanner | Blue | R | Commander 2021 |
| 355 | Muse Vortex | Kieran Yanner | Blue | R | Commander 2021 |
| 25 | Museum Nightwatch | Alix Branwyn | White | C | Murders at Karlov Manor |
| 180 | Mushroom Watchdogs | Alexander Ostrowski | Green | C | The Lord of the Rings: Tales of Middle Earth |
| 631 | Mushroom Watchdogs | Alexander Ostrowski | Green | C | The Lord of the Rings: Tales of Middle Earth |
| Musician | Drew Tucker | Blue | R | Ice Age |
| 56 | Musician | Drew Tucker | Blue | R | Masters Edition II |
| 36 | Muster the Departed | Andrew Mar | White | U | Modern Horizons 3 |
| 248 | Mutagen Connoisseur | Alex Brock | Blue/Green | U | March of the Machine |
| 116 | Mutagenic Growth | Dave Kendall | Green | C | New Phyrexia |
| 149 | Mutagenic Growth | Dave Kendall | Green | U | Modern Masters 2015 Edition |
| 134 | Mutalith Vortex Beast | Kekai Kotaki | Blue/Red | R | Warhammer 40,000 Commander |
| 45 | Mutant's Prey | Ryan Barger | Green | C | Dragon's Maze |
| 53 | Mutated Cultist | Dave Kendall | Black | R | Modern Horizons 3 Commander |
| 105 | Mutated Cultist | Dave Kendall | Black | R | Modern Horizons 3 Commander |
| 111 | Mutational Advantage | Maxim Kostin | Blue/Green | R | Magic The Gathering—Fallout |
| 422 | Mutational Advantage | Maxim Kostin | Blue/Green | R | Magic The Gathering—Fallout |
| 148 | Mutavault | Fred Fields | | R | Morningtide |
| 228 | Mutavault | Fred Fields | | R | Magic 2014 Core Set |
| 903 | Mutavault | Fred Fields | | R | Commander Legends: Battle for Baldur's Gate |
| 55 | Mutilate | Zoltan Boros & Gabor Szikszai | Black | R | Duel Decks Anthology, Garruk vs. Liliana |
| 55 | Mutilate | Zoltan Boros & Gabor Szikszai | Black | R | Duel Decks: Garruk vs. Liliana |
| 73 | Mutilate | Eric Peterson | Black | R | Torment |
| 102 | Mutilate | Tyler Jacobson | Black | R | Magic 2013 |
| 150 | Mutilate | Tyler Jacobson | Black | R | Commander 2014 |
| 203 | Mutilate | Games Workshop | Black | R | Warhammer 40,000 Commander |
| 106 | Mutiny | Gabor Szikszai | Red | C | Rivals of Ixalan |
| 96 | Mutual Destruction | PINDURSKI | Black | C | Ikoria: Lair of Behemoths |
| 24 | Muxus, Goblin Grandee | Dmitry Burmak | Red | R | Jumpstart |
| 575 | Muxus, Goblin Grandee | Dmitry Burmak | Red | R | Jumpstart 2022 |
| 23 | Muzzio, Visionary Architect | Volkan Baga | Blue | M | Magic: The Gathering—Conspiracy |
| 82 | Muzzio, Visionary Architect | Volkan Baga | Blue | M | Vintage Masters |
| 89 | Muzzio, Visionary Architect | Volkan Baga | Blue | M | The Brothers' War Commander |
| 30 | Muzzle | Matt Cavotta | White | C | Mercadian Masques |
| 207 | Mwonvuli Acid-Moss | Randy Gallegos | Green | C | Time Spiral |
| 177 | Mwonvuli Beast Tracker | Zoltan Boros | Green | U | Magic 2013 |
| Mwonvuli Ooze | Zina Saunders | Green | R | Weatherlight |
| 125 | My First Tome | Heather Hudson | | U | Unhinged |
| 217 | Mycoid Maze | Deruchenko Alexander | | U | The Lost Caverns of Ixalan |
| 73 | Mycoid Shepherd | Trevor Claxton | White/Green | R | Alara Reborn |
| 27 | Mycologist | Kev Walker | White | U | Planar Chaos |
| 29 | Mycologist | Kev Walker | White | U | Time Spiral Remastered |
| 68 | Mycoloth | Raymond Swanland | Green | R | Planechase Anthology |
| 68 | Mycoloth | Raymond Swanland | Green | R | Planechase 2012 Edition |
| 129 | Mycoloth | Raymond Swanland | Green | R | Commander Anthology |
| 140 | Mycoloth | Raymond Swanland | Green | R | Shards of Alara |
| 158 | Mycoloth | Raymond Swanland | Green | R | Commander 2016 |
| 192 | Mycoloth | Raymond Swanland | Green | R | Commander 2015 |
| 243 | Myconid Spore Tender | Brian Valeza | Green | C | Commander Legends: Battle for Baldur's Gate |
| 109 | Mycosynth Fiend | Kev Walker | Green | U | Phyrexia: All Will Be One Commander |
| 117 | Mycosynth Fiend | Kev Walker | Green | U | New Phyrexia |
| 137 | Mycosynth Golem | Paolo Parente | | R | Fifth Dawn |
| 130 | Mycosynth Lattice | Anthony S. Waters | | R | Darksteel |
| 241 | Mycosynth Lattice | Anthony S. Waters | | M | Battlebond |
| 56 | Mycosynth Wellspring | David Rapoza | | C | Duel Decks: Elves vs. Inventors |
| 145 | Mycosynth Wellspring | David Rapoza | | C | New Phyrexia |
| 150 | Mycosynth Wellspring | David Rapoza | | C | The Brothers' War Commander |
| 201 | Mycosynth Wellspring | David Rapoza | | C | Commander Anthology 2018 |
| 252 | Mycosynth Wellspring | David Rapoza | | C | Commander 2021 |
| 253 | Mycosynth Wellspring | David Rapoza | | C | Commander 2014 |
| 262 | Mycosynth Wellspring | David Rapoza | | C | Commander 2016 |
| 31 | Myojin of Blooming Dawn | Yigit Koroglu | White | R | Kamigawa: Neon Dynasty Commander |
| 42 | Myojin of Blooming Dawn | Yigit Koroglu | White | R | Kamigawa: Neon Dynasty Commander |
| 35 | Myojin of Cleansing Fire | Kev Walker | White | R | Champions of Kamigawa |
| 33 | Myojin of Cryptic Dreams | Yigit Koroglu | Blue | R | Kamigawa: Neon Dynasty Commander |
| 52 | Myojin of Cryptic Dreams | Yigit Koroglu | Blue | R | Kamigawa: Neon Dynasty Commander |
| 34 | Myojin of Grim Betrayal | Jason A. Engle | Black | R | Kamigawa: Neon Dynasty Commander |
| 55 | Myojin of Grim Betrayal | Jason A. Engle | Black | R | Kamigawa: Neon Dynasty Commander |
| 181 | Myojin of Infinite Rage | Kev Walker | Red | R | Champions of Kamigawa |
| 229 | Myojin of Life's Web | Kev Walker | Green | R | Champions of Kamigawa |
| 126 | Myojin of Night's Reach | Kev Walker | Black | R | Champions of Kamigawa |
| 36 | Myojin of Roaring Blades | Jason A. Engle | Red | R | Kamigawa: Neon Dynasty Commander |
| 61 | Myojin of Roaring Blades | Jason A. Engle | Red | R | Kamigawa: Neon Dynasty Commander |
| 75 | Myojin of Seeing Winds | Kev Walker | Blue | R | Champions of Kamigawa |
| 38 | Myojin of Towering Might | Ryan Pancoast | Green | R | Kamigawa: Neon Dynasty Commander |
| 68 | Myojin of Towering Might | Ryan Pancoast | Green | R | Kamigawa: Neon Dynasty Commander |
| 210 | Myr Adapter | Ben Thompson | | C | Mirrodin |
| 57 | Myr Battlesphere | Franz Vohwinkel | | R | Duel Decks: Elves vs. Inventors |
| 138 | Myr Battlesphere | Franz Vohwinkel | | R | Phyrexia: All Will Be One Commander |
| 151 | Myr Battlesphere | Franz Vohwinkel | | R | The Brothers' War Commander |
| 180 | Myr Battlesphere | Franz Vohwinkel | | R | Scars of Mirrodin |
| 202 | Myr Battlesphere | Franz Vohwinkel | | R | Commander Anthology 2018 |
| 212 | Myr Battlesphere | Franz Vohwinkel | | R | Commander 2018 |
| 247 | Myr Battlesphere | Franz Vohwinkel | | R | Commander 2013 Edition |
| 253 | Myr Battlesphere | Franz Vohwinkel | | R | Commander 2021 |
| 254 | Myr Battlesphere | Franz Vohwinkel | | R | Commander 2014 |
| 263 | Myr Battlesphere | Franz Vohwinkel | | R | Commander 2016 |
| 276 | Myr Battlesphere | Franz Vohwinkel | | R | Double Masters |
| 301 | Myr Battlesphere | Franz Vohwinkel | | R | Modern Horizons 3 Commander |
| 366 | Myr Battlesphere | Franz Vohwinkel | | R | March of the Machine Commander |
| 234 | Myr Convert | José Parodi | | U | Phyrexia: All Will Be One |
| 297 | Myr Convert | JungShan | | U | Phyrexia: All Will Be One |
| 235 | Myr Custodian | Mark Behm | | C | Phyrexia: All Will Be One |
| 120 | Myr Enforcer | Greg Staples | | C | Planechase |
| 168 | Myr Enforcer | Jim Murray | | C | Jumpstart: Historic Horizons |
| 209 | Myr Enforcer | Jim Murray | | C | Modern Masters |
| 211 | Myr Enforcer | Greg Staples | | C | Mirrodin |
| 224 | Myr Enforcer | Jim Murray | | C | Modern Masters 2015 Edition |
| 181 | Myr Galvanizer | Greg Staples | | U | Scars of Mirrodin |