| Kels, Fight Fixer | JMP-15 |
| Kelpie Guide | STX-45 |
| Keldon Strike Team | DMU-136 |
| Keldon Overseer | DOM-134 |
| Keldon Halberdier | IMA-135 |
| Keldon Champion | UDS-90 |
| Keeper of the Nine Gales | LGN-42 |
| Keeper of the Dead | EXO-65 |
| Keeper of the Accord | CMR-27 |
| Keeper of Fables | ELD-163 |
| Keen Sense | PLC-152 |
| Kederekt Parasite | CON-48 |
| Kazandu Refuge | C18-261 |
| Kazandu Blademaster | ZEN-16 |
| Kaya's Ghostform | WAR-94 |
| Kaya, Orzhov Usurper | RNA-186 |
| Kaya, Ghost Assassin | CN2-75 |
| Kavu Primarch | MM2-146 |
| Kavu Predator | PLC-132 |
| Kavu Climber | A25-175 |
| Kathari Remnant | PCA-98 |
| Kataki, War's Wage | SOK-14 |
| Kasmina, Enigmatic Mentor | WAR-56 |
| Kaseto, Orochi Archmage | C21-221 |
| Karstoderm | DST-77 |
| Karrthus, Tyrant of Jund | ARB-117 |
| Karplusan Minotaur | CSP-86 |
| Karplusan Forest | M3C-351 |
| Karoo | VIS-165 |
| Karoo | C14-303 |
| Karn Liberated | NPH-1 |
| Kari Zev, Skyship Raider | AER-87 |
| Kargan Dragonlord | ROE-152 |
| Karametra's Blessing | THB-26 |
| Karametra, God of Harvests | BNG-148 |
| Karador, Ghost Chieftain | CMD-207 |
| Kappa Tech-Wrecker | NEO-198 |
| Kangee, Aerie Keeper | INV-253 |
| Kami of False Hope | BOK-10 |
| Kalonian Hydra | M14-181 |
| Kalitas, Traitor of Ghet | OGW-86 |
| Kaldra Compleat | MH2-227 |
| Kalastria Nightwatch | BFZ-115 |
| Kalastria Highborn | WWK-59 |
| Kalamax, the Stormsire | C20-9 |
| Kaito Shizuki | NEO-226 |
| Kaervek's Torch | MIR-185 |
| Kabira Vindicator | DDP-4 |
| K'rrik, Son of Yawgmoth | C19-18 |
| Jwari Shapeshifter | WWK-32 |