| Mudhole | 62 |
| Mulldrifter (2 variants) | 168 |
| Mulldrifter (2 variants) | 373 |
| Mulldrifter (2 variants) | 374 |
| Mulldrifter | 1887 |
| Murderous Rider // Swift End (2 variants) | 1981 |
| Murktide Regent (2 variants) | 1878 |
| Muscle Sliver | 653 |
| Mutational Advantage (2 variants) | 2454 |
| Muxus, Goblin Grandee | 1314★ |
| Muxus, Goblin Grandee | 1314 |
| Mycoloth (2 variants) | 1136 |
| Mycoloth (2 variants) | 2205 |
| Mycosynth Golem | 1433★ |
| Mycosynth Golem | 1433 |
| Mycosynth Lattice | 1434 |
| Mycosynth Lattice | 1434★ |
| Mycosynth Wellspring | 1435★ |
| Mycosynth Wellspring | 1435 |
| Myr (2 variants) | 2101 |
| Myr Battlesphere (2 variants) | 2097 |
| Mystic Remora | 1842 |
| Mystic Remora (2 variants) | 406 |
| Mystic Sanctuary | 2143 |
| Mystical Tutor (2 variants) | 334 |
| Nahiri, Storm of Stone | 533 |
| Najeela, the Blade-Blossom (2 variants) | 1032 |
| Najeela, the Blade-Blossom (2 variants) | 1557 |
| Narset, Enlightened Master | 53 |
| Narset, Parter of Veils (2 variants) | 1141 |
| Narset, Parter of Veils | 2397 |
| Narset, Parter of Veils | 508 |
| Narset, Parter of Veils (2 variants) | 1041 |
| Nathan Drake, Treasure Hunter (2 variants) | 2216 |
| Nature's Claim (2 variants) | 2297 |
| Nature's Lore | 867 |
| Nature's Lore (2 variants) | 2278 |
| Nature's Lore | 189 |
| Nature's Will (2 variants) | 1282 |
| Necrogen Mists (2 variants) | 1405 |
| Necrotic Ooze | 133 |
| Necrotic Sliver | 666 |
| Negan, the Cold-Blooded | 147 |
| Neheb, Dreadhorde Champion | 857 |
| Nekusar, the Mindrazer | 860 |
| Nekusar, the Mindrazer (2 variants) | 1301 |
| Nekusar, the Mindrazer (2 variants) | 2184 |
| Nemesis of Reason (2 variants) | 1302 |
| Nephalia Drownyard (2 variants) | 351 |
| Nettle Sentinel | 773 |