| Name | Cost | Price |
|---|---|---|
| Lys Alana Huntmaster | $1.13 | |
| Lys Alana Scarblade | $0.19 | |
| Lyse Hext | $1.41 | |
| Lyzolda, the Blood Witch | $0.36 | |
| Mabel, Heir to Cragflame | $1.95 | |
| Macabre Waltz | $0.26 | |
| MacCready, Lamplight Mayor | $5.89 | |
| Mace of the Valiant | $0.28 | |
| Ma Chao, Western Warrior | $80.20 | |
| Machinate | $0.06 | |
| Madame Hydra | — | |
| Madame Null, Power Broker | $0.40 | |
| Madame Vastra | — | |
| Mad Auntie | $0.83 | |
| Madblind Mountain | $0.52 | |
| Madcap Experiment | $0.29 | |
| Maddening Cacophony | $6.07 | |
| Maddening Wind | $0.18 | |
| Madlands | $0.35 | |
| Mad Prophet | $0.05 | |
| Mad Ratter | $0.56 | |
| Madrush Cyclops | $0.37 | |
| Maelstrom Artisan // Rocket Volley | $0.31 | |
| Maelstrom Colossus | $0.35 |