| MacCready, Lamplight MayorFallout · 417 | Fallout | 417 | Rare | €5.62 |
| MacCready, Lamplight MayorFallout · 636 | Fallout | 636 | Rare | €8.64 |
| MacCready, Lamplight MayorFallout · 945 | Fallout | 945 | Rare | €9.48 |
| Mace of the ValiantThrone of Eldraine · 314 | Throne of Eldraine | 314 | Rare | €0.10 |
| Mace of the ValiantFoundations Jumpstart · 221 | Foundations Jumpstart | 221 | Rare | €0.19 |
| Mace of the ValiantPhyrexia: All Will Be One Commander · 78 | Phyrexia: All Will Be One Commander | 78 | Rare | €0.20 |
| Ma Chao, Western WarriorPortal Three Kingdoms · 116 | Portal Three Kingdoms | 116 | Rare | €36.65 |
| Ma Chao, Western WarriorTreasure Chest · 65807 | Treasure Chest | 65807 | Rare | — |
| Machine God's EffigyThe Brothers' War Commander · 16 | The Brothers' War Commander | 16 | Rare | €5.38 |
| Machine God's EffigyThe Brothers' War Commander · 63 | The Brothers' War Commander | 63 | Rare | €1.20 |
| Machine God's EffigyMagic Online Promos · 105844 | Magic Online Promos | 105844 | Rare | — |
| Machine God's EffigyMagic Online Promos · 105846 | Magic Online Promos | 105846 | Rare | — |
| Machinist's ArsenalFinal Fantasy · 23 | Final Fantasy | 23 | Rare | €0.32 |
| Machinist's ArsenalFinal Fantasy Promos · 23s | Final Fantasy Promos | 23s | Rare | €0.25 |
| Madame Hydra, ReanimatedMarvel Super Heroes Commander · 538 | Marvel Super Heroes Commander | 538 | Rare | $0.32 |
| Madame Null, Power BrokerTeenage Mutant Ninja Turtles · 66 | Teenage Mutant Ninja Turtles | 66 | Rare | €0.30 |
| Madame Null, Power BrokerTeenage Mutant Ninja Turtles · 265 | Teenage Mutant Ninja Turtles | 265 | Rare | €0.76 |
| Madame VastraDoctor Who · 142 | Doctor Who | 142 | Rare | €0.12 |
| Madame VastraDoctor Who · 425 | Doctor Who | 425 | Rare | €0.22 |
| Madame VastraDoctor Who · 747 | Doctor Who | 747 | Rare | €0.59 |
| Madame VastraDoctor Who · 1016 | Doctor Who | 1016 | Rare | €1.33 |
| Mad AuntieLorwyn · 123 | Lorwyn | 123 | Rare | €0.92 |
| Mad AuntieJapan Junior Tournament · 3N08 | Japan Junior Tournament | 3N08 | Rare | €0.87 |
| Mad AuntieJunior Super Series · 18 | Junior Super Series | 18 | Rare | €24.79 |
| Mad AuntieMagic Online Promos · 35066 | Magic Online Promos | 35066 | Rare | — |
| Madcap ExperimentKaladesh · 122 | Kaladesh | 122 | Rare | €0.17 |
| Madcap ExperimentKaladesh Promos · 122s | Kaladesh Promos | 122s | Rare | $0.56 |
| Maddening CacophonyZendikar Rising Promos · 67p | Zendikar Rising Promos | 67p | Rare | €5.37 |
| Maddening CacophonyZendikar Rising Promos · 67s | Zendikar Rising Promos | 67s | Rare | €5.81 |
| Maddening CacophonySecret Lair Drop Tokens · 2322 | Secret Lair Drop Tokens | 2322 | Rare | $10.11 |
| Maddening CacophonySecret Lair Drop Tokens · 2337 | Secret Lair Drop Tokens | 2337 | Rare | €16.01 |
| Maddening CacophonySecret Lair Drop Tokens · 2674 | Secret Lair Drop Tokens | 2674 | Rare | €5.71 |
| Maddening CacophonyZendikar Rising · 67 | Zendikar Rising | 67 | Rare | €4.82 |
| Maddening CacophonyZendikar Rising · 330 | Zendikar Rising | 330 | Rare | €5.78 |
| Maddening CacophonyMagic Online Promos · 83774 | Magic Online Promos | 83774 | Rare | — |
| Maddening HexForgotten Realms Commander · 32 | Forgotten Realms Commander | 32 | Rare | €3.88 |
| Maddening HexForgotten Realms Commander · 301 | Forgotten Realms Commander | 301 | Rare | $3.70 |
| Maddening HexMystery Booster 2 Tokens · 195 | Mystery Booster 2 Tokens | 195 | Rare | $1.68 |
| Maddening HexSecret Lair Drop Tokens · 2675 | Secret Lair Drop Tokens | 2675 | Rare | $3.76 |
| Maddening ImpTempest · 143 | Tempest | 143 | Rare | $1.24 |
| MadlandsMystery Booster 2 Tokens · 614 | Mystery Booster 2 Tokens | 614 | Rare | €0.18 |
| Madrush CyclopsAlara Reborn · 119 | Alara Reborn | 119 | Rare | €0.24 |
| Maelstrom Archangel AvatarMagic Online Avatars · 91 | Magic Online Avatars | 91 | Rare | — |
| Maelstrom Artisan // Rocket VolleySecrets of Strixhaven Promos · 122p | Secrets of Strixhaven Promos | 122p | Rare | €0.13 |
| Maelstrom Artisan // Rocket VolleySecrets of Strixhaven · 122 | Secrets of Strixhaven | 122 | Rare | €0.14 |
| Maelstrom Artisan // Rocket VolleySecrets of Strixhaven · 334 | Secrets of Strixhaven | 334 | Rare | €0.17 |
| Maelstrom DjinnFuture Sight · 39 | Future Sight | 39 | Rare | $0.21 |
| Maelstrom of the Spirit DragonTarkir: Dragonstorm Promos · 260p | Tarkir: Dragonstorm Promos | 260p | Rare | €0.81 |
| Maelstrom of the Spirit DragonTarkir: Dragonstorm Promos · 260s | Tarkir: Dragonstorm Promos | 260s | Rare | €2.35 |
| Maelstrom of the Spirit DragonTarkir: Dragonstorm · 260 | Tarkir: Dragonstorm | 260 | Rare | €1.30 |