| 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 |
| 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 |
| 159 | Master Biomancer | Willian Murai | Blue/Green | M | Commander Anthology 2018 |
| 176 | Master Biomancer | Willian Murai | Blue/Green | M | Gatecrash |
| 200 | Master Biomancer | Willian Murai | Blue/Green | M | Ravnica Clue Edition |
| 210 | Master Biomancer | Willian Murai | Blue/Green | M | Commander 2016 |
| 224 | Master Biomancer | Willian Murai | Blue/Green | M | Commander 2021 |
| 250 | Master Biomancer | Willian Murai | Blue/Green | R | Double Masters 2022 |
| 521 | Master Biomancer | Willian Murai | Blue/Green | R | Double Masters 2022 |
| 241 | Master Chef | Forrest Imel | Green | C | Commander Legends: Battle for Baldur's Gate |
| Master Decoy | Phil Foglio | White | C | Battle Royale Box Set |
| Master Decoy | Phil Foglio | White | C | Tempest |
| 18 | Master Decoy | Phil Foglio | White | C | Tempest Remastered |
| 27 | Master Decoy | Ben Thompson | White | C | Ninth Edition |
| 29 | Master Decoy | Ben Thompson | White | C | Eighth Edition |
| 50 | Master Decoy | Ben Thompson | White | C | Duel Decks: Speed vs. Cunning |
| 12 | Master Healer | Adam Rex | White | R | Urza's Destiny |
| 27 | Master Healer | Greg & Tim Hildebrandt | White | R | Seventh Edition |
| 28 | Master Healer | Adam Rex | White | R | Ninth Edition |
| 30 | Master Healer | Greg & Tim Hildebrandt | White | R | Eighth Edition |
| Master of Arms | Dan Frazier | White | U | Weatherlight |
| 18 | Master of Ceremonies | Milivoj Ćeran | White | R | Streets of New Capenna Commander |
| 119 | Master of Ceremonies | Milivoj Ćeran | White | R | Streets of New Capenna Commander |
| 66 | Master of Cruelties | Chase Stone | Black/Red | M | Guild Kit: Rakdos |
| 82 | Master of Cruelties | Chase Stone | Black/Red | M | Dragon's Maze |
| 198 | Master of Cruelties | Chase Stone | Black/Red | M | Ravnica Remastered |
| 251 | Master of Cruelties | Chase Stone | Black/Red | M | Double Masters 2022 |
| 373 | Master of Cruelties | Chase Stone | Black/Red | M | Ravnica Remastered |
| 522 | Master of Cruelties | Chase Stone | Black/Red | M | Double Masters 2022 |
| 51 | Master of Dark Rites | Igor Kieryluk | Black | R | The Lost Caverns of Ixalan Commander |
| 83 | Master of Dark Rites | Igor Kieryluk | Black | R | The Lost Caverns of Ixalan Commander |
| 205 | Master of Death | John Stanko | Blue/Black | R | Modern Horizons 2 |
| 216 | Master of Death | John Stanko | Blue/Black | R | Murders at Karlov Manor Commander |
| 465 | Master of Death | John Stanko | Blue/Black | R | Modern Horizons 2 |
| 24 | Master of Diversion | Michael Komarck | White | C | Magic 2014 Core Set |
| 11 | Master of Etherium | Matt Cavotta | Blue | R | Planechase |
| 48 | Master of Etherium | Matt Cavotta | Blue | R | Duel Decks: Elspeth vs. Tezzeret |
| 49 | Master of Etherium | Matt Cavotta | Blue | R | Shards of Alara |
| 57 | Master of Etherium | Matt Cavotta | Blue | R | Double Masters |
| 86 | Master of Etherium | Matt Cavotta | Blue | R | The Brothers' War Commander |
| 92 | Master of Etherium | Matt Cavotta | Blue | R | Commander 2016 |
| 94 | Master of Etherium | Matt Cavotta | Blue | R | Kamigawa: Neon Dynasty Commander |
| 226 | Master of Etherium | Matt Cavotta | Blue | R | March of the Machine Commander |
| 18 | Master of Pearls | David Gaillet | White | R | Khans of Tarkir |
| 73 | Master of Pearls | David Gaillet | White | R | Murders at Karlov Manor Commander |
| 67 | Master of Predicaments | Matt Stewart | Blue | R | Magic 2015 Core Set |
| 75 | Master of the Feast | Chris Rahn | Black | R | Journey into Nyx |
| Master of the Hunt | Jeff A. Menges | Green | R | Legends |
| 9 | Master of the Pearl Trident | Ryan Pancoast | Blue | R | Duel Decks: Merfolk vs. Goblins |
| 59 | Master of the Pearl Trident | Ryan Pancoast | Blue | R | Magic 2013 |
| 87 | Master of the Pearl Trident | Ryan Pancoast | Blue | R | Jumpstart: Historic Horizons |
| 162 | Master of the Pearl Trident | Ryan Pancoast | Blue | R | The Lost Caverns of Ixalan Commander |
| 310 | Master of the Pearl Trident | Ryan Pancoast | Blue | B | Time Spiral Remastered |
| 43 | Master of the Veil | Ron Spears | Blue | U | Legions |
| 181 | Master of the Wild Hunt | Kev Walker | Green | M | Masters 25 |
| 191 | Master of the Wild Hunt | Kev Walker | Green | M | Magic 2010 |
| 688 | Master of the Wild Hunt | Kev Walker | Green | M | Jumpstart 2022 |
| 1 | Master of Waves | Svetlin Velinov | Blue | M | Duel Decks: Merfolk vs. Goblins |
| 53 | Master of Waves | Karl Kopinski | Blue | M | Theros |
| 68 | Master of Winds | Yigit Koroglu | Blue | R | Zendikar Rising |
| 331 | Master of Winds | Yigit Koroglu | Blue | R | Zendikar Rising |
| 19 | Master Skald | Svetlin Velinov | White | C | Kaldheim |
| 15 | Master Splicer | Chippy | White | U | Modern Masters 2017 Edition |
| 16 | Master Splicer | Chippy | White | U | New Phyrexia |
| 22 | Master Splicer | Chippy | White | U | Double Masters |
| 29 | Master Splicer | Chippy | White | U | Core Set 2020 |
| 194 | Master Splicer | Chippy | White | U | March of the Machine Commander |
| 138 | Master Symmetrist | Forrest Imel | Green | U | Strixhaven: School of Mages |
| 188 | Master the Way | Howard Lyon | Blue/Red | U | Khans of Tarkir |
| 30 | Master Thief | Christopher Moeller | Blue | U | Zendikar Rising Commander |
| 64 | Master Thief | Christopher Moeller | Blue | U | Magic 2012 |
| 7 | Master Transmuter | Chippy | Blue | R | Archenemy |
| 31 | Master Transmuter | Chippy | Blue | R | Conflux |
| 58 | Master Transmuter | Chippy | Blue | R | Double Masters |
| 87 | Master Transmuter | Chippy | Blue | R | The Brothers' War Commander |
| 21 | Master Trinketeer | Matt Stewart | White | R | Kaladesh |
| 25 | Master Trinketeer | Matt Stewart | White | R | Kaladesh Remastered |
| 92 | Master Warcraft | Zoltan Boros & Gabor Szikszai | White/Red | R | Guild Kit: Boros |
| 202 | Master Warcraft | Zoltan Boros & Gabor Szikszai | White/Red | R | Commander Anthology |
| 209 | Master Warcraft | Zoltan Boros & Gabor Szikszai | White/Red | R | Magic: The Gathering-Commander |
| 250 | Master Warcraft | Zoltan Boros & Gabor Szikszai | White/Red | R | Ravnica: City of Guilds |
| 447 | Master Warcraft | Zoltan Boros & Gabor Szikszai | White/Red | R | Commander Legends |
| 164 | Mastercraft Raptor | Zoltan Boros | Red | U | The Lost Caverns of Ixalan |
| 60 | Masterful Ninja | Matt Gaser | Black | R | Unstable |
| 65 | Masterful Replication | Victor Adame Minguez | Blue | R | Core Set 2020 |
| 227 | Masterful Replication | Victor Adame Minguez | Blue | R | March of the Machine Commander |
| 3 | Mastermind Plum | Bryan Sola | Black | R | Ravnica Clue Edition |
| 77 | Mastermind's Acquisition | Svetlin Velinov | Black | R | Rivals of Ixalan |
| 13 | Master's Call | David Rapoza | White | C | Mirrodin Besieged |
| 233 | Master's Guide-Mural | Racrufi | White/Blue | U | The Lost Caverns of Ixalan |
| 233 | Master's Manufactory | Racrufi | White/Blue | U | The Lost Caverns of Ixalan |
| 202 | Master's Rebuke | Francisco Miyara | Green | C | Kamigawa: Neon Dynasty |
| 689 | Master's Rebuke | Francisco Miyara | Green | C | Jumpstart 2022 |
| 57 | Masterwork of Ingenuity | Ulrich Brunin | | R | Commander 2014 |
| 209 | Masterwork of Ingenuity | Ulrich Brunin | | R | Adventures in the Forgotten Realms Commander |
| 234 | Masterwork of Ingenuity | Daarken | | R | Magic The Gathering—Fallout |
| 271 | Masterwork of Ingenuity | Ulrich Brunin | | R | Double Masters |
| 483 | Masterwork of Ingenuity | Daarken | | R | Magic The Gathering—Fallout |
| 19 | Mastery of the Unseen | Daniel Ljunggren | White | R | Ugin's Fate promos |
| 19 | Mastery of the Unseen | Daniel Ljunggren | White | R | Fate Reforged |
| 74 | Mastery of the Unseen | Daniel Ljunggren | White | R | Murders at Karlov Manor Commander |
| 7 | Masticore | Steven Belledin | | M | From the Vault: Relics |
| 134 | Masticore | Paolo Parente | | R | Urza's Destiny |
| 275 | Masticore | Steven Belledin | | R | Vintage Masters |
| 136 | Masumaro, First to Live | Adam Rex | Green | R | Saviors of Kamigawa |
| 84 | Matca Rioters | Steve Argyle | Green | C | Conflux |
| 148 | Matca Rioters | Steve Argyle | Green | C | Modern Masters 2015 Edition |
| 42 | Mathas, Fiend Seeker | Joe Slucher | White/Black/Red | M | Commander 2017 |
| 252 | Mathas, Fiend Seeker | Joe Slucher | White/Black/Red | R | Double Masters 2022 |
| 523 | Mathas, Fiend Seeker | Joe Slucher | White/Black/Red | R | Double Masters 2022 |
| 137 | Matsu-Tribe Birdstalker | Heather Hudson | Green | C | Saviors of Kamigawa |
| 227 | Matsu-Tribe Decoy | Alan Pollack | Green | C | Champions of Kamigawa |
| 136 | Matsu-Tribe Sniper | Carl Critchlow | Green | C | Betrayers of Kamigawa |
| 6 | Matter Reshaper | Chris Rahn | | R | Oath of the Gatewatch |
| 806 | Matter Reshaper | Chris Rahn | | R | Commander Masters |
| 27 | Maul of the Skyclaves | Joseph Meehan | White | R | Zendikar Rising |
| 80 | Maul of the Skyclaves | Joseph Meehan | White | R | Phyrexia: All Will Be One Commander |
| 195 | Maul of the Skyclaves | Joseph Meehan | White | R | March of the Machine Commander |
| 320 | Maul of the Skyclaves | Joseph Meehan | White | R | Zendikar Rising |
| 114 | Maul Splicer | Jason Chan | Green | C | New Phyrexia |
| 123 | Maulfist Doorbuster | Josh Hass | Red | U | Kaladesh |
| 115 | Maulfist Revolutionary | Scott Murphy | Green | U | Aether Revolt |
| 168 | Maulfist Revolutionary | Scott Murphy | Green | U | Kaladesh Remastered |
| 91 | Maulfist Squad | Matt Stewart | Black | C | Kaladesh |
| 99 | Maulfist Squad | Matt Stewart | Black | C | Kaladesh Remastered |
| 13 | Mausoleum Guard | David Palumbo | White | U | Duel Decks: Sorin vs. Tibalt |
| 20 | Mausoleum Guard | David Palumbo | White | U | Innistrad |
| 213 | Mausoleum Guard | David Palumbo | White | U | Jumpstart 2022 |
| 78 | Mausoleum Harpy | Randy Vargas | Black | U | Rivals of Ixalan |
| 75 | Mausoleum Secrets | Adam Paquette | Black | R | Guilds of Ravnica |
| 84 | Mausoleum Turnkey | Darrell Riche | Black | U | Ravnica Remastered |
| 94 | Mausoleum Turnkey | Darrell Riche | Black | U | Ravnica: City of Guilds |
| 116 | Mausoleum Turnkey | Darrell Riche | Black | U | Ravnica Clue Edition |
| 142 | Mausoleum Turnkey | Darrell Riche | Black | U | Conspiracy: Take the Crown |
| 255 | Mausoleum Turnkey | Darrell Riche | Black | U | Jumpstart |
| 69 | Mausoleum Wanderer | Kieran Yanner | Blue | R | Eldritch Moon |
| 81 | Mausoleum Wanderer | Kieran Yanner | Blue | R | Shadows Over Innistrad Remastered |
| 50 | Maverick Thopterist | Zack Stella | Blue/Red | U | Duel Decks: Elves vs. Inventors |
| 130 | Maverick Thopterist | Zack Stella | Blue/Red | U | Aether Revolt |
| 185 | Maverick Thopterist | Zack Stella | Blue/Red | U | Commander 2018 |
| 199 | Maverick Thopterist | Zack Stella | Blue/Red | U | Kaladesh Remastered |
| 21 | Mavinda, Students' Advocate | Wesley Burt | White | M | Strixhaven: School of Mages |
| 291 | Mavinda, Students' Advocate | Wesley Burt | White | M | Strixhaven: School of Mages |
| 24 | Mavren Fein, Dusk Apostle | Daarken | White | R | Ixalan |
| 133 | Mavren Fein, Dusk Apostle | Daarken | White | R | The Lost Caverns of Ixalan Commander |
| 121 | Mayael's Aria | Steve Argyle | White/Red/Green | R | Alara Reborn |
| 253 | Mayael's Aria | Steve Argyle | White/Red/Green | R | Double Masters 2022 |
| 524 | Mayael's Aria | Steve Argyle | White/Red/Green | R | Double Masters 2022 |
| Maze of Shadows | D. Alexander Gregory | | U | Tempest |
| 238 | Maze of Shadows | D. Alexander Gregory | | U | Tempest Remastered |
| 33 | Maze Rusher | Yeong-Hao Han | Red | C | Dragon's Maze |
| 4 | Maze Sentinel | Yeong-Hao Han | White | C | Dragon's Maze |
| 231 | Maze Skullbomb | Matt Forsyth | | C | Phyrexia: All Will Be One |
| 27 | Maze's End | Cliff Childs | | M | Historic Anthology 3 |
| 152 | Maze's End | Cliff Childs | | M | Dragon's Maze |
| 465 | Maze's End | Cliff Childs | | M | Ravnica Remastered |
| 174 | Maze's Mantle | L.A draws | Green | C | Phyrexia: All Will Be One |
| 48 | Mazirek, Kraul Death Priest | Mathias Kollros | Black/Green | M | Commander 2015 |
| 185 | Mazirek, Kraul Death Priest | Mathias Kollros | Black/Green | M | Commander Anthology |
| 209 | Mazirek, Kraul Death Priest | Mathias Kollros | Black/Green | R | Double Masters |
| 241 | Mazzy, Truesword Paladin | Justyna Dura | White/Red/Green | R | Alchemy Horizons: Baldur's Gate |
| 281 | Mazzy, Truesword Paladin | Diesel | White/Red/Green | R | Alchemy Horizons: Baldur's Gate |
| 283 | Mazzy, Truesword Paladin | Justyna Gil | White/Red/Green | R | Commander Legends: Battle for Baldur's Gate |
| 430 | Mazzy, Truesword Paladin | Diesel | White/Red/Green | R | Commander Legends: Battle for Baldur's Gate |
| 141 | Meandering Towershell | YW Tang | Green | R | Khans of Tarkir |
| 82 | Measure of Wickedness | Daren Bader | Black | U | Saviors of Kamigawa |
| 108 | Meathook Massacre II | Tiffany Turrill | Black | M | Duskmourn: House of Horror |
| 293 | Meathook Massacre II | Tiffany Turrill | Black | M | Duskmourn: House of Horror |
| 311 | Meathook Massacre II | SchmandrewART | Black | M | Duskmourn: House of Horror |
| 118 | Meddling Kids | Christopher Moeller | White/Blue | R | Unhinged |
| 219 | Meddling Youths | Matt Forsyth | White/Red | U | Murders at Karlov Manor |
| 367 | Meddling Youths | Jack Hughes | White/Red | U | Murders at Karlov Manor |
| 196 | Medomai the Ageless | David Palumbo | White/Blue | M | Theros |
| 53 | Medomai's Prophecy | Seb McKinnon | Blue | U | Theros Beyond Death |
| Meekstone | Quinton Hoover | | R | Fifth Edition |
| Meekstone | Quinton Hoover | | R | Fourth Edition |
| Meekstone | Quinton Hoover | | R | Revised Edition |
| Meekstone | Quinton Hoover | | R | Unlimited Edition |
| Meekstone | Quinton Hoover | | R | Limited Edition Beta |
| Meekstone | Quinton Hoover | | R | Limited Edition Alpha |
| 40 | Meekstone | Steve Argyle | | S | Masterpiece Series: Kaladesh Inventions |
| 298 | Meekstone | Quinton Hoover | | R | Classic Sixth Edition |
| 307 | Meekstone | David Martin | | R | Seventh Edition |
| 66 | Meeting of Minds | Milivoj Ćeran | Blue | C | March of the Machine |
| 185 | Megantic Sliver | Ryan Barger | Green | R | Magic 2014 Core Set |
| 901 | Megantic Sliver | Campbell White | Green | R | Commander Masters |
| 61 | Megaton's Fate | Chris Cold | Red | R | Magic The Gathering—Fallout |
| 388 | Megaton's Fate | Chris Cold | Red | R | Magic The Gathering—Fallout |
| 12 | Megatron, Destructive Force | Volta Creation | White/Black/Red | M | The Brothers' War Transformers Cards |
| 26 | Megatron, Destructive Force | Volta Creation | White/Black/Red | M | The Brothers' War Transformers Cards |