| Name | Cost | Price |
|---|---|---|
| Metalspinner's Puzzleknot | $0.14 | |
| Metalwork Colossus | $1.84 | |
| Metalworker | $29.29 | |
| Metamorphosis | $4.99 | |
| Metamorphosis Fanatic | $5.79 | |
| Metathran Elite | $0.09 | |
| Metathran Transport | $0.14 | |
| Meteor Crater | $3.33 | |
| Meteor Golem | $0.15 | |
| Meteoric Mace | $0.18 | |
| Meteorite | $0.08 | |
| Meteor Shower | $0.21 | |
| Meteor Storm | $0.28 | |
| Me, the Immortal | — | |
| Meticulous Archive | $17.52 | |
| Metropolis Reformer | $1.35 | |
| Mezzio Mugger | — | |
| Miara, Thorn of the Glade | $0.20 | |
| Miasmic Mummy | $0.08 | |
| Michelangelo, Game Master | $0.16 | |
| Michelangelo, Mutant BFF | $0.24 | |
| Michelangelo's Technique | $0.29 | |
| Michelangelo, the Heart | — | |
| Michelangelo, Weirdness to 11 | $3.20 |