| Metallic MimicMarvel Super Heroes Commander · 441 | Marvel Super Heroes Commander | 441 | Rare | €1.44 |
| Metalwork ColossusThe Brothers' War Commander · 147 | The Brothers' War Commander | 147 | Rare | €0.30 |
| Metalwork ColossusCommander Masters · 960 | Commander Masters | 960 | Rare | €0.41 |
| Metalwork ColossusKaladesh · 222 | Kaladesh | 222 | Rare | €0.56 |
| Metalwork ColossusKaladesh Promos · 222s | Kaladesh Promos | 222s | Rare | €2.08 |
| Metalwork ColossusSecret Lair Drop Tokens · 377 | Secret Lair Drop Tokens | 377 | Rare | €1.68 |
| Metalwork ColossusSecret Lair Drop Tokens · 378 | Secret Lair Drop Tokens | 378 | Rare | €1.32 |
| Metalwork ColossusKaladesh Remastered · 252 | Kaladesh Remastered | 252 | Rare | — |
| Metalwork ColossusMarvel Super Heroes Commander · 204 | Marvel Super Heroes Commander | 204 | Rare | €0.31 |
| Metalwork ColossusMarvel Super Heroes Commander · 442 | Marvel Super Heroes Commander | 442 | Rare | €1.31 |
| MetalworkerUrza's Destiny · 135 | Urza's Destiny | 135 | Rare | €102.69 |
| MetalworkerWorld Championship Decks 2000 Tokens · jf135 | World Championship Decks 2000 Tokens | jf135 | Rare | €22.14 |
| MetalworkerMagic Online Promos · 46950 | Magic Online Promos | 46950 | Rare | — |
| Metamorphic AlterationCore Set 2019 · 60 | Core Set 2019 | 60 | Rare | $0.36 |
| Metamorphic AlterationCore Set 2019 Promos · 60s | Core Set 2019 Promos | 60s | Rare | $1.05 |
| Metamorphosis FanaticDuskmourn: House of Horror Commander · 21 | Duskmourn: House of Horror Commander | 21 | Rare | €6.04 |
| Metamorphosis FanaticDuskmourn: House of Horror Commander · 51 | Duskmourn: House of Horror Commander | 51 | Rare | $6.05 |
| Metathran AerostatInvasion · 61 | Invasion | 61 | Rare | €0.29 |
| Meteor BlastLegendary Cube Prize Pack · 64 | Legendary Cube Prize Pack | 64 | Rare | — |
| Meteor CraterEdge of Eternities: Stellar Sights · 26 | Edge of Eternities: Stellar Sights | 26 | Rare | €1.28 |
| Meteor CraterEdge of Eternities: Stellar Sights · 71 | Edge of Eternities: Stellar Sights | 71 | Rare | €2.66 |
| Meteor CraterEdge of Eternities: Stellar Sights · 116 | Edge of Eternities: Stellar Sights | 116 | Rare | €9.25 |
| Meteor CraterEdge of Eternities: Stellar Sights · 161 | Edge of Eternities: Stellar Sights | 161 | Rare | €14.15 |
| Meteor CraterPlaneshift · 140 | Planeshift | 140 | Rare | €1.85 |
| Meteor GolemSecret Lair Drop Tokens · 285 | Secret Lair Drop Tokens | 285 | Rare | €2.89 |
| Meteor GolemSecret Lair Drop Tokens · 1660 | Secret Lair Drop Tokens | 1660 | Rare | €1.43 |
| Meteor GolemSecret Lair Drop Tokens · 2225 | Secret Lair Drop Tokens | 2225 | Rare | €1.11 |
| Meteor StormInvasion · 256 | Invasion | 256 | Rare | €0.29 |
| Meteor SwarmAdventures in the Forgotten Realms · 155 | Adventures in the Forgotten Realms | 155 | Rare | €0.26 |
| Meteor SwarmAdventures in the Forgotten Realms · 380 | Adventures in the Forgotten Realms | 380 | Rare | €0.24 |
| Meteor SwarmAdventures in the Forgotten Realms Promos · 155a | Adventures in the Forgotten Realms Promos | 155a | Rare | $1.70 |
| Meteor SwarmAdventures in the Forgotten Realms Promos · 155p | Adventures in the Forgotten Realms Promos | 155p | Rare | €0.25 |
| Meteor SwarmAdventures in the Forgotten Realms Promos · 155s | Adventures in the Forgotten Realms Promos | 155s | Rare | €0.94 |
| Meteor SwarmMagic Online Promos · 92750 | Magic Online Promos | 92750 | Rare | — |
| Me, the ImmortalDoctor Who · 147 | Doctor Who | 147 | Rare | €0.26 |
| Me, the ImmortalDoctor Who · 430 | Doctor Who | 430 | Rare | €0.70 |
| Me, the ImmortalDoctor Who · 752 | Doctor Who | 752 | Rare | €2.72 |
| Me, the ImmortalDoctor Who · 1021 | Doctor Who | 1021 | Rare | €3.07 |
| Methods of the MightyMarvel Super Heroes Commander · 21 | Marvel Super Heroes Commander | 21 | Rare | €0.20 |
| Methods of the MightyMarvel Super Heroes Commander · 315 | Marvel Super Heroes Commander | 315 | Rare | €0.71 |
| Meticulous ArchiveMurders at Karlov Manor · 264 | Murders at Karlov Manor | 264 | Rare | €13.82 |
| Meticulous ArchiveMurders at Karlov Manor · 328 | Murders at Karlov Manor | 328 | Rare | $17.31 |
| Meticulous ArchiveMurders at Karlov Manor Promos · 264p | Murders at Karlov Manor Promos | 264p | Rare | €14.53 |
| Meticulous ArchiveMurders at Karlov Manor Promos · 264s | Murders at Karlov Manor Promos | 264s | Rare | $19.98 |
| MetrognomeUrza's Saga · 301 | Urza's Saga | 301 | Rare | $0.48 |
| Metropolis ReformerMarch of the Machine: The Aftermath · 4 | March of the Machine: The Aftermath | 4 | Rare | €1.33 |
| Metropolis ReformerMarch of the Machine: The Aftermath · 54 | March of the Machine: The Aftermath | 54 | Rare | €1.65 |
| Metropolis ReformerMarch of the Machine: The Aftermath · 104 | March of the Machine: The Aftermath | 104 | Rare | €1.64 |
| Metropolis ReformerMarch of the Machine: The Aftermath · 152 | March of the Machine: The Aftermath | 152 | Rare | €2.02 |
| Metropolis ReformerMarch of the Machine: The Aftermath · 189 | March of the Machine: The Aftermath | 189 | Rare | €4.46 |