| Jetmir, Nexus of Revels // Jetmir, Nexus of Revels | 1555 |
| Jhoira, Weatherlight Captain | 1276 |
| Jiang Yanggu, Wildcrafter | 517 |
| Jin Sakai, Ghost of Tsushima (2 variants) | 2226 |
| Jinnie Fay, Jetmir's Second // Jinnie Fay, Jetmir's Second | 1556 |
| Jinnie Fay, Jetmir's Second // Jinnie Fay, Jetmir's Second | 1510 |
| Jodah, the Unifier (2 variants) | 1932 |
| Joel, Resolute Survivor (2 variants) | 2198 |
| Joraga Treespeaker (2 variants) | 1281 |
| K'rrik, Son of Yawgmoth (2 variants) | 1186 |
| Kaalia of the Vast (2 variants) | 1563 |
| Kalamax, the Stormsire (4 variants) | 2252 |
| Kalitas, Traitor of Ghet (2 variants) | 1687 |
| Kami of the Crescent Moon (2 variants) | 260 |
| Karador, Ghost Chieftain | 1646 |
| Karador, Ghost Chieftain | 1646★ |
| Karametra, God of Harvests | 69 |
| Karazikar, the Eye Tyrant (2 variants) | 1791 |
| Kardur, Doomscourge // Kardur, Doomscourge (2 variants) | 1807 |
| Karlach, Fury of Avernus (2 variants) | 1802 |
| Karmic Guide (2 variants) | 1911 |
| Karmic Guide (2 variants) | 281 |
| Karn, Scion of Urza | 1419★ |
| Karn, Scion of Urza | 1419 |
| Karn, the Great Creator | 501 |
| Karn, the Great Creator | 253 |
| Karn's Bastion (2 variants) | 1751 |
| Karona, False God (2 variants) | 1624 |
| Karrthus, Tyrant of Jund (2 variants) | 1250 |
| Kasmina, Enigmatic Mentor | 507 |
| Kaya, Bane of the Dead | 531 |
| Kaya, Ghost Assassin (2 variants) | 247 |
| Kediss, Emberclaw Familiar (2 variants) | 2364 |
| Keen Duelist (2 variants) | 828 |
| Kelsien, the Plague (2 variants) | 1558 |
| Ken, Burning Brawler (2 variants) | 430 |
| Keranos, God of Storms | 79 |
| Kess, Dissident Mage (2 variants) | 1167 |
| Kessig Wolf Run (2 variants) | 355 |
| Kezzerdrix (2 variants) | 826 |
| Kiki-Jiki, Mirror Breaker (2 variants) | 1659 |
| Kindred Summons | 1901 |
| Kiora, Behemoth Beckoner | 532 |
| Kiora, Behemoth Beckoner (2 variants) | 1700 |
| Kira, Great Glass-Spinner (2 variants) | 421 |
| Klauth, Unrivaled Ancient (2 variants) | 2499 |
| Knight Exemplar (2 variants) | 1044 |
| Knight Exemplar (2 variants) | 707 |
| Knight of the White Orchid (2 variants) | 1045 |
| Knight of the White Orchid | 7139 |