| Monoist SentryEdge of Eternities · 111 | Edge of Eternities | 111 | Uncommon | €0.08 |
| Monologue TaxCommander 2021 · 19 | Commander 2021 | 19 | Rare | $2.75 |
| Monologue TaxCommander 2021 · 346 | Commander 2021 | 346 | Rare | €5.50 |
| Monologue TaxDuskmourn: House of Horror Commander · 100 | Duskmourn: House of Horror Commander | 100 | Rare | $2.06 |
| Monologue TaxMarvel Super Heroes Commander · 139 | Marvel Super Heroes Commander | 139 | Rare | €1.22 |
| Monologue TaxSecrets of Strixhaven Commander · 157 | Secrets of Strixhaven Commander | 157 | Rare | €1.85 |
| Monologue TaxSecret Lair Drop Tokens · 1838 | Secret Lair Drop Tokens | 1838 | Rare | €3.36 |
| Monologue TaxThe List Tokens · C21-19 | The List Tokens | C21-19 | Rare | $3.40 |
| Monologue TaxMagic Online Promos · 90006 | Magic Online Promos | 90006 | Rare | — |
| Monologue TaxMarvel Super Heroes Commander · 317 | Marvel Super Heroes Commander | 317 | Rare | €2.10 |
| MonomaniaMagic 2012 · 102 | Magic 2012 | 102 | Rare | €0.20 |
| MonoskelionModern Horizons 2 · 229 | Modern Horizons 2 | 229 | Uncommon | €0.05 |
| MonoskelionModern Horizons 2 · 429 | Modern Horizons 2 | 429 | Uncommon | $0.13 |
| MonoskelionJumpstart: Historic Horizons · 748 | Jumpstart: Historic Horizons | 748 | Uncommon | — |
| Monoxa, Midway ManagerUnfinity · 173 | Unfinity | 173 | Uncommon | €0.12 |
| Monoxa, Midway ManagerUnfinity · 265 | Unfinity | 265 | Uncommon | €0.06 |
| Monoxa, Midway ManagerUnfinity · 459 | Unfinity | 459 | Uncommon | €1.40 |
| Monoxa, Midway ManagerUnfinity · 516 | Unfinity | 516 | Uncommon | $0.37 |
| MonsoonIce Age · 298 | Ice Age | 298 | Rare | €0.47 |
| Mons's Goblin RaidersUnlimited Edition · 165 | Unlimited Edition | 165 | Common | $0.59 |
| Mons's Goblin RaidersRevised Edition · 167 | Revised Edition | 167 | Common | $0.17 |
| Mons's Goblin Raiders30th Anniversary Edition · 160 | 30th Anniversary Edition | 160 | Common | €0.18 |
| Mons's Goblin Raiders30th Anniversary Edition · 457 | 30th Anniversary Edition | 457 | Common | $1.00 |
| Mons's Goblin RaidersFourth Edition Foreign Black Border · 213 | Fourth Edition Foreign Black Border | 213 | Common | €0.35 |
| Mons's Goblin RaidersFourth Edition · 213 | Fourth Edition | 213 | Common | €0.10 |
| Mons's Goblin RaidersFifth Edition · 251 | Fifth Edition | 251 | Common | €0.12 |
| Mons's Goblin RaidersCollectors' Edition · 165 | Collectors' Edition | 165 | Common | $1.50 |
| Mons's Goblin RaidersIntl. Collectors' Edition · 165 | Intl. Collectors' Edition | 165 | Common | €1.05 |
| Mons's Goblin RaidersForeign Black Border · 167 | Foreign Black Border | 167 | Common | €0.28 |
| Mons's Goblin RaidersIntroductory Two-Player Set · 35 | Introductory Two-Player Set | 35 | Common | €0.19 |
| Mons's Goblin RaidersLimited Edition Alpha · 164 | Limited Edition Alpha | 164 | Common | €26.39 |
| Mons's Goblin RaidersLimited Edition Beta · 165 | Limited Edition Beta | 165 | Common | €4.86 |
| Mons's Goblin RaidersRivals Quick Start Set · 34 | Rivals Quick Start Set | 34 | Common | — |
| Mons's Goblin RaidersStarter 2000 · 32 | Starter 2000 | 32 | Common | $0.22 |
| Mons's Goblin RaidersStarter 1999 · 112 | Starter 1999 | 112 | Common | $0.25 |
| Mons's Goblin RaidersSummer Magic / Edgar · 167 | Summer Magic / Edgar | 167 | Common | €365.66 |
| Mons's Goblin WaitersUnhinged · 82 | Unhinged | 82 | Common | €0.14 |
| Mons's Goblin WaitersUnhinged · 82★ | Unhinged | 82★ | Common | €0.10 |
| Monster Manual // Zoological StudyCommander Legends: Battle for Baldur's Gate · 242 | Commander Legends: Battle for Baldur's Gate | 242 | Rare | €6.82 |
| Monster Manual // Zoological StudyCommander Legends: Battle for Baldur's Gate · 591 | Commander Legends: Battle for Baldur's Gate | 591 | Rare | €7.30 |
| Monster Manual // Zoological StudyBattle for Baldur's Gate Promos · 242s | Battle for Baldur's Gate Promos | 242s | Rare | €6.17 |
| Monster Manual // Zoological StudySecret Lair Drop Tokens · 1782 | Secret Lair Drop Tokens | 1782 | Rare | €8.72 |
| Monster Manual // Zoological StudyAlchemy Horizons: Baldur's Gate · 217 | Alchemy Horizons: Baldur's Gate | 217 | Rare | — |
| Monster MashupTeenage Mutant Ninja Turtles Eternal · 117 | Teenage Mutant Ninja Turtles Eternal | 117 | Common | €0.15 |
| Monster Mash-UpUnknown Event · RB15 | Unknown Event | RB15 | Rare | — |
| Monster of the Week // Monster of the Week (cont'd)Innistrad: Crimson Vow Minigames · 1 | Innistrad: Crimson Vow Minigames | 1 | — | — |
| Monster // SorcererWilds of Eldraine Tokens · 15 | Wilds of Eldraine Tokens | 15 | — | $0.39 |
| Monster TerritoryDominaria United Jumpstart Front Cards · 10 | Dominaria United Jumpstart Front Cards | 10 | — | — |
| Monster // VirtuousWilds of Eldraine Commander Tokens · 1 | Wilds of Eldraine Commander Tokens | 1 | — | — |
| MonstrifyEventide · 70 | Eventide | 70 | Common | €0.09 |