| Masterwork of Ingenuity (6 variants) | 483 |
| Masterwork of Ingenuity (14 variants) | 234 |
| Masterwork of Ingenuity | 1011 |
| Masterwork of Ingenuity | 762 |
| Mechanized Production (14 variants) | 178 |
| Mechanized Production (6 variants) | 461 |
| Mechanized Production | 706 |
| Mechanized Production | 989 |
| Megaton's Fate (6 variants) | 388 |
| Megaton's Fate | 916 |
| Megaton's Fate (14 variants) | 61 |
| Megaton's Fate | 589 |
| Memorial to Glory (14 variants) | 271 |
| Memorial to Glory | 799 |
| Mind Stone (14 variants) | 235 |
| Mind Stone | 763 |
| Mirelurk Queen | 905 |
| Mirelurk Queen (14 variants) | 33 |
| Mirelurk Queen | 561 |
| Mirelurk Queen (6 variants) | 377 |
| Mister Gutsy | 664 |
| Mister Gutsy (14 variants) | 136 |
| Mister Gutsy (6 variants) | 433 |
| Mister Gutsy | 961 |
| Moira Brown, Guide Author (6 variants) | 420 |
| Moira Brown, Guide Author (14 variants) | 110 |
| Moira Brown, Guide Author | 638 |
| Moira Brown, Guide Author | 948 |
| Morbid Opportunist (14 variants) | 186 |
| Morbid Opportunist | 714 |
| Mortuary Mire (14 variants) | 272 |
| Mortuary Mire | 800 |
| Mossfire Valley | 801 |
| Mossfire Valley | 1029 |
| Mossfire Valley (14 variants) | 273 |
| Mossfire Valley (6 variants) | 501 |
| Mountain | 851 |
| Mountain | 852 |
| Mountain (14 variants) | 324 |
| Mountain (14 variants) | 323 |
| Mr. House, President and CEO (6 variants) | 421 |
| Mr. House, President and CEO (7 variants) | 7 |
| Mr. House, President and CEO | 535 |
| Mr. House, President and CEO | 949 |
| Mutational Advantage | 639 |
| Mutational Advantage (14 variants) | 111 |
| Mutational Advantage | 950 |
| Mutational Advantage (6 variants) | 422 |
| Myriad Landscape | 802 |
| Myriad Landscape (14 variants) | 274 |