| Name | Cost | Price |
|---|---|---|
| Mary Read and Anne Bonny | $0.36 | |
| Mascot Exhibition | $0.75 | |
| Masked Admirers | $0.16 | |
| Masked Bandits | $0.11 | |
| Masked Gorgon | $0.42 | |
| Masked Meower | $0.10 | |
| Masked Vandal | $5.61 | |
| Mask of Avacyn | $0.88 | |
| Mask of Griselbrand | $1.14 | |
| Mask of Memory | $0.34 | |
| Mask of the Mimic | $0.38 | |
| Maskwood Nexus | $2.08 | |
| Massacre | $0.50 | |
| Massacre Girl | $0.56 | |
| Massacre Girl, Known Killer | $2.84 | |
| Massacre Wurm | — | |
| Mass Calcify | $2.41 | |
| Mass Hysteria | $3.02 | |
| Massive Might | $0.13 | |
| Mass Mutiny | $0.41 | |
| Mass of Ghouls | $0.06 | |
| Mass Polymorph | $0.32 | |
| Master Biomancer | $0.87 | |
| Master Decoy | $0.07 |