| Name | Cost | Price |
|---|---|---|
| Mountain Stronghold | $7.24 | |
| Mountain Valley | $0.30 | |
| Mountain Yeti | $3.05 | |
| Mount Doom | — | |
| Mounted Archers | $0.12 | |
| Mourning | $0.17 | |
| Mourning Patrol // Morning Apparition | $0.09 | |
| Mourning Thrull | $0.06 | |
| Mournwhelk | $0.26 | |
| Mournwillow | $0.09 | |
| Mouser Attack! | $0.11 | |
| Mouth of Ronom | $0.64 | |
| Mouth of the Storm | $0.09 | |
| Mox Amber | $89.89 | |
| Mox Diamond | $1,128.58 | |
| Mox Emerald | $699.50 | |
| Mox Jasper | $19.32 | |
| Mox Jet | $674.99 | |
| Mox Opal | $247.48 | |
| Mox Pearl | — | |
| Mox Poison | $1.44 | |
| Mox Ruby | $445.26 | |
| Mox Sapphire | — | |
| Mr. House, President and CEO | — |