| 3 | Macabre Waltz (FOIL) | MTGDissension_047F |
| 1 | MacCready, Lamplight Mayor (Foil) | MTGPIP_108F |
| 3 | Mace of the Valiant | MTGONC_078 |
| 4+ | Mace of the Valiant (Brawl) | MTGThrone of Eldraine_314 |
| 4+ | Macetail Hystrodon | MTGLegions_106 |
| 2 | Macetail Hystrodon FOIL | MTGLegions_106F |
| 4+ | Machinate | MTGDarksteel_024 |
| 3 | Machinate Foil | MTGDarksteel_024F |
| 4+ | Machine God's Effigy (Retro Frame) | MTGBRC_016 |
| 3 | Mad Auntie | MTGLorwyn_123 |
| 3 | Mad Auntie | MTGModernMasters_090 |
| 1 | Mad Auntie (Foil) | MTGModernMasters_090F |
| 4+ | Mad Dog | MTGOdyssey_202 |
| 4+ | Mad Dog Foil | MTGOdyssey_202F |
| 1 | Mad Prophet | MTGAvacynRestored_146 |
| 4+ | Mad Prophet | MTGDDSorin_051 |
| 4+ | Mad Ratter | MTGThrone of Eldraine_130 |
| 1 | Mad Ratter (Foil) | MTGThrone of Eldraine_130F |
| 4+ | Madame Vastra | MTGWHO_142 |
| 4+ | Madblind Mountain | MTGShadowmoor_274 |
| 2 | Madcap Experiment | MTGKaladesh_122 |
| 4+ | Madcap Skills | MTGGatecrash_098 |
| 1 | Maddening Hex | MTGAFC_032 |
| 4+ | Maddening Imp | MTGTMP_143 |
| 4+ | Maddening Wind | MTGICE_254 |
| 4+ | Madrush Cyclops | MTGAlaraReborn_119 |
| 3 | Maelstrom Archangel | MTGConflux_115 |
| 1 | Maelstrom Archangel | MTGJMP_454 |
| 1 | Maelstrom Archangel | MTGDMC_158 |
| 4+ | Maelstrom Colossus | MTGCMR_322 |
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