| 44 | Meishin, the Mind Cage | Thomas Gianni | Blue | R | Saviors of Kamigawa |
| 60 | Meldweb Strider | Julian Kok Joon Wen | Blue | C | Phyrexia: All Will Be One |
| 430 | Melek, Reforged Researcher | Andreas Zafiratos | Blue/Red | M | Murders at Karlov Manor |
| Melesse Spirit | Gerry Grace | White | U | Mirage |
| 43 | Meletis Astronomer | Dan Scott | Blue | U | Born of the Gods |
| 54 | Meletis Charlatan | Jason A. Engle | Blue | R | Theros |
| 115 | Melira, Sylvok Outcast | Min Yum | Green | R | New Phyrexia |
| 83 | Melira's Keepers | Eric Deschamps | Green | U | Mirrodin Besieged |
| 243 | Memorial to Genius | James Paick | | U | Dominaria |
| 301 | Memorial to Genius | James Paick | | U | Commander 2021 |
| 485 | Memorial to Genius | James Paick | | U | Commander Legends |
| 815 | Memorial to Genius | James Paick | | U | Jumpstart 2022 |
| 27 | Memory Bank (playtest) | Pete White | Blue | C | Mystery Booster |
| 134 | Memory Crystal | Michael Sutfin | | R | Exodus |
| 45 | Memory Erosion | Howard Lyon | Blue | R | Commander Anthology 2018 |
| 50 | Memory Erosion | Howard Lyon | Blue | R | Magic: The Gathering-Commander |
| 50 | Memory Erosion | Howard Lyon | Blue | R | Shards of Alara |
| Memory Lapse | Mark Tedin | Blue | C | Fifth Edition |
| Memory Lapse | Rebecca Guay | Blue | C | Mirage |
| Memory Lapse | Mark Tedin | Blue | C | Homelands |
| Memory Lapse | Mark Tedin | Blue | C | Homelands |
| 16 | Memory Lapse | Kristina Collantes | Blue | R | Strixhaven Mystical Archive |
| 24 | Memory Lapse | Rebecca Guay | Blue | C | Duel Decks: Jace vs. Vraska |
| 60 | Memory Lapse | Greg Staples | Blue | C | Eternal Masters |
| 81 | Memory Lapse | Mark Tedin | Blue | C | Classic Sixth Edition |
| 88 | Memory Lapse | Tristan Elwell | Blue | C | Seventh Edition |
| 108 | Memory of Toshiro | Sidharth Chaturvedi | Black | U | Kamigawa: Neon Dynasty |
| 170 | Memory Sluice | Wayne England | Blue/Black | C | Shadowmoor |
| 221 | Memory Test (a) | Setor Fiadzigbey | | R | Unfinity (Acorn) |
| 221 | Memory Test (b) | Setor Fiadzigbey | | R | Unfinity (Acorn) |
| 13 | Memory Vessel | Diego Gisbert | Red | M | Outlaws of Thunder Junction: The Big Score |
| 43 | Memory Vessel | Nino Vecia | Red | M | Outlaws of Thunder Junction: The Big Score |
| 78 | Memory Vessel | Diego Gisbert | Red | M | Outlaws of Thunder Junction: The Big Score |
| 66 | Memory's Journey | Slawomir Maniak | Blue | U | Innistrad |
| 241 | Mend the Wilds | Steve Prescott | Green | U | Wilds of Eldraine |
| 15 | Mending Hands | Douglas Shuler | White | C | Betrayers of Kamigawa |
| 29 | Mending Hands | Douglas Shuler | White | C | Ninth Edition |
| 62 | Meneldor, Swift Savior | Axel Sauerwald | Blue | U | The Lord of the Rings: Tales of Middle Earth |
| 513 | Meneldor, Swift Savior | Axel Sauerwald | Blue | U | The Lord of the Rings: Tales of Middle Earth |
| 129 | Meng Huo's Horde | Yang Jun Kwon | Green | C | Masters Edition III |
| 143 | Meng Huo's Horde | s/b Lie Tiu | Green | C | Portal Three Kingdoms |
| 37 | Mental Discipline | Edward P. Beard, Jr. | Blue | C | Urza's Destiny |
| 38 | Mental Misstep | Erica Yang | Blue | U | New Phyrexia |
| 72 | Mental Vapors | Mark Winters | Black | U | Gatecrash |
| 11 | Mentor of Evos Isle | Shreya Shetty | Blue | C | Jumpstart: Historic Horizons |
| 46 | Mentor's Guidance | Brian Valeza | Blue | U | Strixhaven: School of Mages |
| 4 | Mephidross Vampire | Samuel Araya | Black | R | Special Guests |
| 53 | Mephidross Vampire | Matthew D. Wilson | Black | R | Fifth Dawn |
| 76 | Mephitic Vapors | Darek Zabrocki | Black | C | Guilds of Ravnica |
| 85 | Mephitic Vapors | Darek Zabrocki | Black | C | Ravnica Remastered |
| 60 | Mephit's Enthusiasm | Kim Sokol | Red | U | Alchemy Horizons: Baldur's Gate |
| 305 | Mercadian Atlas | Dan Frazier | | R | Mercadian Masques |
| 205 | Mercadia's Downfall | Pete Venters | Red | U | Mercadian Masques |
| Mercenaries | Cornelius Brudi | White | R | Ice Age |
| 44 | Merchant of Secrets | Greg Hildebrandt | Blue | C | Legions |
| 87 | Merchant of Secrets | Greg Hildebrandt | Blue | C | Commander 2017 |
| 90 | Merchant of Secrets | Greg Hildebrandt | Blue | C | Eighth Edition |
| 81 | Merchant Raiders | Deruchenko Alexander | Blue | U | Commander Legends |
| 163 | Merchant Raiders | Deruchenko Alexander | Blue | U | The Lost Caverns of Ixalan Commander |
| Merchant Scroll | Liz Danforth | Blue | C | Homelands |
| 91 | Merchant Scroll | David Martin | Blue | U | Eighth Edition |
| Merchant Ship | Tom Wänerstrand | Blue | U | Arabian Nights |
| 163 | Merchant's Dockhand | Christine Choi | | R | Aether Revolt |
| 250 | Merchant's Dockhand | Christine Choi | | R | Kaladesh Remastered |
| 71 | Merciless Eternal | Mathias Kollros | Black | U | Hour of Devastation |
| 120 | Merciless Eviction | Richard Wright | White/Black | R | Phyrexia: All Will Be One Commander |
| 160 | Merciless Eviction | Richard Wright | White/Black | R | Dominaria United Commander |
| 160 | Merciless Eviction | Richard Wright | White/Black | R | Commander Anthology 2018 |
| 177 | Merciless Eviction | Richard Wright | White/Black | R | Gatecrash |
| 179 | Merciless Eviction | Richard Wright | White/Black | R | Commander 2017 |
| 211 | Merciless Eviction | Richard Wright | White/Black | R | Double Masters |
| 211 | Merciless Eviction | Richard Wright | White/Black | R | Commander 2016 |
| 76 | Merciless Executioner | David Palumbo | Black | U | Fate Reforged |
| 204 | Merciless Executioner | Anton Solovianchyk | Black | U | The Lord of the Rings: Tales of Middle Earth Commander |
| 287 | Merciless Harlequin | Lixin Yin | Black | C | Assassin's Creed |
| 202 | Merciless Javelineer | Nils Hamm | Black/Red | U | Amonkhet |
| 245 | Merciless Javelineer | Nils Hamm | Black/Red | U | Amonkhet Remastered |
| 159 | Merciless Predator | Michael C. Hayes | Red | U | Innistrad |
| 117 | Merciless Repurposing | Artur Nakhodkin | Black | U | March of the Machine |
| 122 | Merciless Resolve | Chase Stone | Black | C | Shadows Over Innistrad Remastered |
| 123 | Merciless Resolve | Chase Stone | Black | C | Shadows over Innistrad |
| 180 | Mercurial Chemister | Wesley Burt | Blue/Red | R | Commander 2017 |
| 180 | Mercurial Chemister | Wesley Burt | Blue/Red | R | Return to Ravnica |
| 221 | Mercurial Chemister | Wesley Burt | Blue/Red | R | Ikoria Commander |
| 186 | Mercurial Geists | Lake Hurwitz | Blue/Red | U | Eldritch Moon |
| 236 | Mercurial Geists | Lake Hurwitz | Blue/Red | U | Shadows Over Innistrad Remastered |
| 61 | Mercurial Spelldancer | Marcela Bolivar | Blue | R | Phyrexia: All Will Be One |
| 381 | Mercurial Spelldancer | Marcela Bolivar | Blue | R | Phyrexia: All Will Be One |
| 47 | Mercurial Transformation | Craig J Spearing | Blue | U | Strixhaven: School of Mages |
| Merfolk Assassin | Denise Detwiler | Blue | U | The Dark |
| 25 | Merfolk Assassin | Dennis Detwiller | Blue | S | Time Spiral "Timeshifted" |
| 60 | Merfolk Coralsmith | Evyn Fong | Blue | C | Wilds of Eldraine |
| 66 | Merfolk Mesmerist | Jana Schirmer & Johannes Voss | Blue | C | Magic 2012 |
| 164 | Merfolk Mistbinder | Clint Cearley | Blue/Green | U | Rivals of Ixalan |
| 276 | Merfolk Mistbinder | Clint Cearley | Blue/Green | U | The Lost Caverns of Ixalan Commander |
| 76 | Merfolk Observer | Anthony Francisco | Blue | C | Rise of the Eldrazi |
| 200 | Merfolk of the Depths | Scott Chou | Blue/Green | C | Ravnica Remastered |
| 221 | Merfolk of the Depths | Scott Chou | Blue/Green | U | Gatecrash |
| Merfolk Raiders | Steve Luke | Blue | C | Mirage |
| 55 | Merfolk Seastalkers | Eric Deschamps | Blue | U | Zendikar |
| 53 | Merfolk Secretkeeper | Jana Schirmer | Blue | C | Throne of Eldraine |
| Merfolk Seer | Steve Luke | Blue | C | Mirage |
| 205 | Merfolk Skydiver | Sara Winters | Blue/Green | U | War of the Spark |
| 277 | Merfolk Skydiver | Sara Winters | Blue/Green | U | The Lost Caverns of Ixalan Commander |
| 77 | Merfolk Skyscout | rk post | Blue | U | Rise of the Eldrazi |
| 115 | Merfolk Skyscout | rk post | Blue | U | Conspiracy: Take the Crown |
| 10 | Merfolk Sovereign | Slawomir Maniak | Blue | R | Explorers of Ixalan |
| 11 | Merfolk Sovereign | Jesper Ejsing | Blue | R | Duel Decks: Merfolk vs. Goblins |
| 62 | Merfolk Sovereign | Jesper Ejsing | Blue | R | Magic 2010 |
| 65 | Merfolk Sovereign | Jesper Ejsing | Blue | R | Magic 2011 |
| 164 | Merfolk Sovereign | Marta Nael | Blue | R | The Lost Caverns of Ixalan Commander |
| 321 | Merfolk Sovereign | Jesper Ejsing | Blue | R | Jumpstart 2022 |
| 62 | Merfolk Spy | Matt Cavotta & Richard Whitters | Blue | C | Magic 2014 Core Set |
| 66 | Merfolk Spy | Matt Cavotta & Richard Whitters | Blue | C | Magic 2011 |
| 56 | Merfolk Thaumaturgist | Steve Prescott | Blue | C | Planar Chaos |
| Merfolk Traders | DiTerlizzi | Blue | C | Weatherlight |
| 56 | Merfolk Trickster | Jesper Ejsing | Blue | U | Dominaria |
| 206 | Meria, Scholar of Antiquity | Aurore Folny | Red/Green | R | Dominaria United |
| 305 | Meria, Scholar of Antiquity | Carly Mazur | Red/Green | R | Dominaria United |
| 346 | Meria, Scholar of Antiquity | Carly Mazur | Red/Green | R | Dominaria United |
| 138 | Meria's Outrider | Lius Lasahido | Red | C | Dominaria United |
| 44 | Merrow Wavebreakers | Alex Horley-Orlandelli | Blue | C | Shadowmoor |
| 40 | Merrow Witsniper | Steve Prescott | Blue | C | Morningtide |
| 140 | Merry Bards | Iris Compiet | Red | C | Wilds of Eldraine |
| 215 | Merry, Esquire of Rohan | Tomas Duchek | White/Red | R | The Lord of the Rings: Tales of Middle Earth |
| 325 | Merry, Esquire of Rohan | Dominik Mayer | White/Red | R | The Lord of the Rings: Tales of Middle Earth |
| 437 | Merry, Esquire of Rohan | Tyler Jacobson | White/Red | R | The Lord of the Rings: Tales of Middle Earth |
| 666 | Merry, Esquire of Rohan | Tomas Duchek | White/Red | R | The Lord of the Rings: Tales of Middle Earth |
| 61 | Merry, Warden of Isengard | Viko Menezes | White/Green | R | The Lord of the Rings: Tales of Middle Earth Commander |
| 143 | Merry, Warden of Isengard | Viko Menezes | White/Green | R | The Lord of the Rings: Tales of Middle Earth Commander |
| 468 | Merry, Warden of Isengard | Viko Menezes | White/Green | R | The Lord of the Rings: Tales of Middle Earth Commander |
| Merseine | Drew Tucker | Blue | C | Fallen Empires |
| Merseine | Pete Venters | Blue | C | Fallen Empires |
| Merseine | Margaret Organ-Kean | Blue | C | Fallen Empires |
| Merseine | Heather Hudson | Blue | C | Fallen Empires |
| 26 | Mesa Cavalier | David Palumbo | White | C | Dominaria United |
| 9 | Mesa Chicken | Kev Walker | White | C | Unglued |
| 14 | Mesa Enchantress | Randy Gallegos | White | U | Dominaria Remastered |
| 19 | Mesa Enchantress | Randy Gallegos | White | U | Eternal Masters |
| 20 | Mesa Enchantress | Randy Gallegos | White | R | Magic 2010 |
| 25 | Mesa Enchantress | Randy Gallegos | White | R | Magic 2012 |
| 26 | Mesa Enchantress | Randy Gallegos | White | R | Planar Chaos |
| 68 | Mesa Enchantress | Eelis Kyttanen | White | R | Duskmourn: House of Horror Commander |
| 75 | Mesa Enchantress | Randy Gallegos | White | R | Commander 2015 |
| 267 | Mesa Enchantress | Randy Gallegos | White | U | Dominaria Remastered |
| 828 | Mesa Enchantress | Randy Gallegos | White | R | Commander Masters |
| Mesa Falcon | Mark Poole | White | C | Fifth Edition |
| Mesa Falcon | Mark Poole | White | C | Homelands |
| Mesa Falcon | Mark Poole | White | C | Homelands |
| 31 | Mesa Falcon | Mark Poole | White | C | Classic Sixth Edition |
| 28 | Mesa Lynx | Svetlin Velinov | White | C | Zendikar Rising |
| 214 | Mesa Lynx | Svetlin Velinov | White | C | Jumpstart 2022 |
| Mesa Pegasus | Melissa A. Benson | White | C | Fifth Edition |
| Mesa Pegasus | Melissa A. Benson | White | C | Fourth Edition |
| Mesa Pegasus | Melissa Benson | White | C | Revised Edition |
| Mesa Pegasus | Melissa Benson | White | C | Unlimited Edition |
| Mesa Pegasus | Melissa Benson | White | C | Limited Edition Beta |
| Mesa Pegasus | Melissa Benson | White | C | Limited Edition Alpha |
| 20 | Mesa Pegasus | Melissa A. Benson | White | C | Masters Edition |
| 15 | Mesa Unicorn | Winona Nelson | White | C | Game Night |
| 27 | Mesa Unicorn | Winona Nelson | White | C | Dominaria |
| 122 | Mesa Unicorn | Winona Nelson | White | C | Jumpstart |
| 7 | Mesmeric Fiend | Dana Knutson | Black | C | Duel Decks: Sorin vs. Tibalt |
| 69 | Mesmeric Fiend | Dana Knutson | Black | C | Torment |
| 97 | Mesmeric Fiend | Dana Knutson | Black | U | Masters 25 |
| 128 | Mesmeric Fiend | Dana Knutson | Black | C | Vintage Masters |
| 49 | Mesmeric Glare | Irina Nordsol | Blue | U | Throne of Eldraine |
| 96 | Mesmeric Glare | Irina Nordsol | Blue | U | Wilds of Eldraine Commander |
| 31 | Mesmeric Orb | David Martin | | M | The Brothers' War Retro Artifacts |
| 94 | Mesmeric Orb | David Martin | | M | The Brothers' War Retro Artifacts |
| 204 | Mesmeric Orb | David Martin | | R | Mirrodin |
| 272 | Mesmeric Orb | David Martin | | R | Double Masters |
| 53 | Mesmeric Sliver | Michael Bruinsma | Blue | C | Future Sight |
| Mesmeric Trance | Dan Frazier | Blue | R | Ice Age |
| 55 | Mesmeric Trance | Dan Frazier | Blue | R | Masters Edition II |
| 43 | Mesmerizing Benthid | Kev Walker | Blue | M | Ravnica Allegiance |
| 62 | Mesmerizing Dose | Konstantin Porubov | Blue | C | Phyrexia: All Will Be One |
| 63 | Messenger Drake | Yeong-Hao Han | Blue | C | Magic 2014 Core Set |
| 145 | Messenger Falcons | David Palumbo | White/Blue/Green | U | Alara Reborn |
| 35 | Messenger Jays | Lars Grant-West | Blue | C | Conspiracy: Take the Crown |
| 129 | Messenger's Speed | Clint Cearley | Red | C | Theros |
| 8 | Metagamer (playtest) | Francisco O. Martin | White | C | Mystery Booster |
| 71 | Metallic Mastery | Erica Yang | Red | U | Mirrodin Besieged |
| Metallic Sliver | L. A. Williams | | C | Tempest |
| 1 | Metallic Sliver | L. A. Williams | | C | Premium Deck Series: Slivers |
| 226 | Metallic Sliver | Allen Williams | | C | Tempest Remastered |
| 56 | Metallurgic Summonings | Kieran Yanner | Blue | M | Kaladesh |
| 57 | Metallurgic Summonings | Kieran Yanner | Blue | M | Kaladesh Remastered |
| 122 | Metallurgic Summonings | Kieran Yanner | Blue | M | Commander 2021 |
| 221 | Metalspinner's Puzzleknot | Vincent Proce | | C | Kaladesh |
| 273 | Metalspinner's Puzzleknot | Vincent Proce | | C | Double Masters |
| 147 | Metalwork Colossus | Jaime Jones | | R | The Brothers' War Commander |
| 222 | Metalwork Colossus | Jaime Jones | | R | Kaladesh |
| 252 | Metalwork Colossus | Jaime Jones | | R | Kaladesh Remastered |
| 960 | Metalwork Colossus | Jaime Jones | | R | Commander Masters |