| Maalfeld TwinsCommander Legends · 132 | Commander Legends | 132 | Common | €0.12 |
| Maalfeld TwinsFoundations · 523 | Foundations | 523 | Uncommon | $0.11 |
| Maalfeld TwinsGame Night: Free-for-All · 56 | Game Night: Free-for-All | 56 | Common | €0.05 |
| Maalfeld TwinsJumpstart 2022 · 438 | Jumpstart 2022 | 438 | Common | €0.10 |
| Maarika, Brutal GladiatorUniverses Within · 15 | Universes Within | 15 | Rare | €0.15 |
| Maarika, Brutal GladiatorSecret Lair Drop Tokens · 435 | Secret Lair Drop Tokens | 435 | Rare | €4.90 |
| Mabel, Bitter RecluseReality Fracture · 233 | Reality Fracture | 233 | Uncommon | €0.12 |
| Mabel, Heir to CragflameBloomburrow · 224 | Bloomburrow | 224 | Rare | $0.31 |
| Mabel, Heir to CragflameBloomburrow · 336 | Bloomburrow | 336 | Rare | €1.05 |
| Mabel, Heir to CragflameBloomburrow · 351 | Bloomburrow | 351 | Rare | €178.65 |
| Mabel, Heir to CragflameBloomburrow Promos · 224p | Bloomburrow Promos | 224p | Rare | €0.33 |
| Mabel, Heir to CragflameBloomburrow Promos · 224s | Bloomburrow Promos | 224s | Rare | €1.28 |
| Mabel, Heir to Cragflame // Mabel, Heir to CragflameBloomburrow Art Series · 45 | Bloomburrow Art Series | 45 | — | — |
| Mabel's MettleBloomburrow · 21 | Bloomburrow | 21 | Uncommon | €0.18 |
| Mabel, Valley HeroReality Fracture · 274 | Reality Fracture | 274 | Uncommon | €0.13 |
| Macabre MockeryRavnica Allegiance · 191 | Ravnica Allegiance | 191 | Uncommon | $0.11 |
| Macabre ReconstructionMurders at Karlov Manor · 93 | Murders at Karlov Manor | 93 | Common | €0.06 |
| Macabre Reconstruction // Macabre ReconstructionMurders at Karlov Manor Art Series · 9 | Murders at Karlov Manor Art Series | 9 | — | — |
| Macabre WaltzDissension · 47 | Dissension | 47 | Common | $0.06 |
| Macabre WaltzFoundations · 177 | Foundations | 177 | Common | €0.05 |
| Macabre WaltzJumpstart · 252 | Jumpstart | 252 | Common | €0.16 |
| Macabre WaltzCore Set 2019 · 108 | Core Set 2019 | 108 | Common | €0.04 |
| Macabre WaltzMagic Origins · 107 | Magic Origins | 107 | Common | €0.08 |
| Macabre WaltzRavnica Remastered · 82 | Ravnica Remastered | 82 | Common | €0.06 |
| Macabre WaltzThe List Tokens · SOI-121 | The List Tokens | SOI-121 | Common | €0.16 |
| Macabre WaltzShadows over Innistrad · 121 | Shadows over Innistrad | 121 | Common | €0.05 |
| Macabre WaltzShadows over Innistrad Remastered · 121 | Shadows over Innistrad Remastered | 121 | Common | — |
| MacCready, Lamplight MayorFallout · 108 | Fallout | 108 | Rare | $3.85 |
| MacCready, Lamplight MayorFallout · 417 | Fallout | 417 | Rare | €5.59 |
| MacCready, Lamplight MayorFallout · 636 | Fallout | 636 | Rare | €8.64 |
| MacCready, Lamplight MayorFallout · 945 | Fallout | 945 | Rare | €9.19 |
| Mace of DisruptionAlchemy Horizons: Baldur's Gate · 23 | Alchemy Horizons: Baldur's Gate | 23 | Common | — |
| Mace of the ValiantCommander Masters · 41 | Commander Masters | 41 | Uncommon | €0.12 |
| 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 | €0.21 |
| Macetail HystrodonDominaria Remastered · 130 | Dominaria Remastered | 130 | Common | $0.04 |
| Macetail HystrodonLegions · 106 | Legions | 106 | Common | €0.08 |
| MACH-1, Swooping ScoundrelMarvel Super Heroes Commander · 662 | Marvel Super Heroes Commander | 662 | Common | €0.18 |
| Ma Chao, Western WarriorPortal Three Kingdoms · 116 | Portal Three Kingdoms | 116 | Rare | €36.65 |
| Ma Chao, Western WarriorTreasure Chest · 65807 | Treasure Chest | 65807 | Rare | — |
| MachinateDarksteel · 24 | Darksteel | 24 | Common | $0.08 |
| Machine God's EffigyThe Brothers' War Commander · 16 | The Brothers' War Commander | 16 | Rare | €5.49 |
| 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 | — |
| Machine Man, Model X-51Marvel Super Heroes Commander · 751 | Marvel Super Heroes Commander | 751 | Uncommon | €0.10 |
| Machine Over MatterThe Brothers' War · 57 | The Brothers' War | 57 | Common | €0.09 |
| Machinesmith AutomatonMarvel Super Heroes · 144 | Marvel Super Heroes | 144 | Common | €0.09 |
| Machinist's ArsenalFinal Fantasy · 23 | Final Fantasy | 23 | Rare | €0.30 |