| Moonlit LamenterLorwyn Eclipsed · 26 | Lorwyn Eclipsed | 26 | Uncommon | €0.04 |
| Moonlit WakeMercadian Masques · 29 | Mercadian Masques | 29 | Uncommon | €0.24 |
| Moonring IslandShadowmoor · 276 | Shadowmoor | 276 | Uncommon | $0.46 |
| Moonshae Pixie // Pixie DustCommander Legends: Battle for Baldur's Gate · 84 | Commander Legends: Battle for Baldur's Gate | 84 | Uncommon | $0.11 |
| Moonsilver KeyInnistrad: Double Feature · 255 | Innistrad: Double Feature | 255 | Uncommon | €1.89 |
| Moonsilver KeyInnistrad: Midnight Hunt · 255 | Innistrad: Midnight Hunt | 255 | Uncommon | $0.85 |
| Moon SpritePortal · 174 | Portal | 174 | Uncommon | $0.36 |
| Moon SpriteStarter 2000 · 42 | Starter 2000 | 42 | Uncommon | €0.21 |
| Moon SpriteStarter 1999 · 133 | Starter 1999 | 133 | Uncommon | $0.18 |
| Moonstone HarbingerBloomburrow · 101 | Bloomburrow | 101 | Uncommon | €0.10 |
| Moonstone, Harsh MistressMarvel Super Heroes · 107 | Marvel Super Heroes | 107 | Uncommon | €0.10 |
| Moonstone, Harsh MistressMarvel Super Heroes · 447 | Marvel Super Heroes | 447 | Uncommon | €0.52 |
| Moon-Vigil AdherentsLorwyn Eclipsed · 184 | Lorwyn Eclipsed | 184 | Uncommon | €0.11 |
| Moradin's DisciplesAlchemy Horizons: Baldur's Gate · 24 | Alchemy Horizons: Baldur's Gate | 24 | Uncommon | — |
| Morbid BloomAlara Reborn · 94 | Alara Reborn | 94 | Uncommon | $0.23 |
| Morbid CuriosityBattlebond · 149 | Battlebond | 149 | Uncommon | €0.19 |
| Morbid CuriosityKaladesh · 94 | Kaladesh | 94 | Uncommon | €0.16 |
| Morbid OpportunistBloomburrow Commander · 183 | Bloomburrow Commander | 183 | Uncommon | €0.29 |
| Morbid OpportunistInnistrad: Double Feature · 113 | Innistrad: Double Feature | 113 | Uncommon | €1.22 |
| Morbid OpportunistDuskmourn: House of Horror Commander · 148 | Duskmourn: House of Horror Commander | 148 | Uncommon | €0.31 |
| Morbid OpportunistFinal Fantasy Commander · 278 | Final Fantasy Commander | 278 | Uncommon | €0.23 |
| Morbid OpportunistInnistrad Remastered · 124 | Innistrad Remastered | 124 | Uncommon | €0.24 |
| Morbid OpportunistInnistrad Remastered · 388 | Innistrad Remastered | 388 | Uncommon | €1.23 |
| Morbid OpportunistFoundations Jumpstart · 464 | Foundations Jumpstart | 464 | Uncommon | €0.25 |
| Morbid OpportunistInnistrad: Midnight Hunt · 113 | Innistrad: Midnight Hunt | 113 | Uncommon | $0.39 |
| Morbid OpportunistOutlaws of Thunder Junction Commander · 142 | Outlaws of Thunder Junction Commander | 142 | Uncommon | €0.26 |
| Morbid OpportunistFallout · 186 | Fallout | 186 | Uncommon | $0.31 |
| Morbid OpportunistFallout · 714 | Fallout | 714 | Uncommon | €8.56 |
| Morbid OpportunistThe List Tokens · MID-113 | The List Tokens | MID-113 | Uncommon | $0.22 |
| Morbid OpportunistSecrets of Strixhaven Commander · 219 | Secrets of Strixhaven Commander | 219 | Uncommon | $0.27 |
| Morbid OpportunistTarkir: Dragonstorm Commander · 188 | Tarkir: Dragonstorm Commander | 188 | Uncommon | €0.10 |
| Morbius the Living VampireMarvel's Spider-Man · 137 | Marvel's Spider-Man | 137 | Uncommon | €0.07 |
| Morbius the Living VampireThrough the Omenpaths · 156 | Through the Omenpaths | 156 | Uncommon | — |
| Morcant's EyesLorwyn Eclipsed · 185 | Lorwyn Eclipsed | 185 | Uncommon | €0.08 |
| Morcant's LoyalistLorwyn Eclipsed · 236 | Lorwyn Eclipsed | 236 | Uncommon | €0.27 |
| Morcant's LoyalistLorwyn Eclipsed · 341 | Lorwyn Eclipsed | 341 | Uncommon | €0.27 |
| More or LessUnstable · 40 | Unstable | 40 | Uncommon | €0.12 |
| Moritte of the FrostKaldheim · 223 | Kaldheim | 223 | Uncommon | €0.15 |
| Moritte of the FrostKaldheim · 328 | Kaldheim | 328 | Uncommon | €0.13 |
| Moritte of the FrostThe List Tokens · KHM-223 | The List Tokens | KHM-223 | Uncommon | $0.24 |
| Moritte of the FrostMagic Online Promos · 88392 | Magic Online Promos | 88392 | Uncommon | — |
| Morkrut BansheeDouble Masters · 99 | Double Masters | 99 | Uncommon | $0.01 |
| Morkrut BansheeCommander 2014 · 149 | Commander 2014 | 149 | Uncommon | $0.05 |
| Morkrut BansheeConspiracy · 118 | Conspiracy | 118 | Uncommon | $0.03 |
| Morkrut BansheeInnistrad Remastered · 125 | Innistrad Remastered | 125 | Uncommon | €0.08 |
| Morkrut BansheeInnistrad · 110 | Innistrad | 110 | Uncommon | €0.07 |
| Morkrut BansheeJumpstart 2022 · 121 | Jumpstart 2022 | 121 | Uncommon | €0.11 |
| Morkrut NecropodFoundations Jumpstart · 466 | Foundations Jumpstart | 466 | Uncommon | €0.21 |
| Morkrut NecropodShadows over Innistrad · 125 | Shadows over Innistrad | 125 | Uncommon | €0.07 |
| MoroiiDuel Decks: Ajani vs. Nicol Bolas · 51 | Duel Decks: Ajani vs. Nicol Bolas | 51 | Uncommon | €0.06 |