| Katilda and Lier (9 variants) | 449 |
| Keeper of the Accord (8 variants) | 191 |
| Keskit, the Flesh Sculptor (8 variants) | 254 |
| Kessig Wolf Run (8 variants) | 410 |
| Ketria (8 variants) | 55 |
| Kharasha Foothills (8 variants) | 149 |
| Kher Keep (8 variants) | 411 |
| Knight Exemplar (8 variants) | 192 |
| Knight of the Last Breath (8 variants) | 331 |
| Knight of the White Orchid (8 variants) | 193 |
| Knights of the Black Rose (8 variants) | 332 |
| Knights' Charge (8 variants) | 333 |
| Kodama's Reach (8 variants) | 306 |
| Krenko, Tin Street Kingpin (8 variants) | 287 |
| Krosa (8 variants) | 150 |
| Krosan Verge (8 variants) | 412 |
| Kykar, Wind's Fury (8 variants) | 334 |
| Liliana's Standard Bearer (8 variants) | 255 |
| Liliana's Talent (10 variants) | 84 |
| Liliana's Talent (16 variants) | 76 |
| Littjara (8 variants) | 56 |
| Llanowar Reborn (8 variants) | 413 |
| Locthwain Lancer (8 variants) | 27 |
| Locthwain Lancer (5 variants) | 114 |
| Managorger Hydra (8 variants) | 307 |
| Massacre Wurm (8 variants) | 256 |
| Master of Etherium (8 variants) | 226 |
| Master Splicer (8 variants) | 194 |
| Masterful Replication (8 variants) | 227 |
| Maul of the Skyclaves (8 variants) | 195 |
| Megaflora Jungle (8 variants) | 57 |
| Mentor of the Meek (8 variants) | 196 |
| Meteor Golem (8 variants) | 363 |
| Midnight Reaper (8 variants) | 257 |
| Migratory Route (8 variants) | 336 |
| Mikaeus, the Lunarch (8 variants) | 197 |
| Mind Stone (8 variants) | 364 |
| Mindless Automaton (8 variants) | 365 |
| Mirror-Style Master (8 variants) | 32 |
| Mirror-Style Master (5 variants) | 119 |
| Mistmeadow Vanisher (5 variants) | 129 |
| Mistmeadow Vanisher (8 variants) | 42 |
| Moira and Teshar (16 variants) | 7 |
| Moira and Teshar (10 variants) | 93 |
| Mortify (8 variants) | 337 |
| Mossfire Valley (8 variants) | 414 |
| Mosswort Bridge (8 variants) | 415 |
| Murderous Rider // Swift End (8 variants) | 258 |
| Mutual Epiphany (8 variants) | 151 |
| Myr Battlesphere (8 variants) | 366 |