| Name | Cost | Price |
|---|---|---|
| Karoo | $0.31 | |
| Karoo Meerkat | $0.22 | |
| Karplusan Forest | $0.71 | |
| Karplusan Strider | $0.11 | |
| Karrthus, Tyrant of Jund | $6.42 | |
| Karstoderm | $0.06 | |
| Karsus Depthguard | $0.05 | |
| Karumonix, the Rat King | — | |
| Kaseto, Orochi Archmage | $0.37 | |
| Kashi-Tribe Reaver | $0.20 | |
| Kasimir the Lone Wolf | $2.52 | |
| Kasla, the Broken Halo | $0.67 | |
| Kasmina, Enigma Sage | $1.05 | |
| Kasmina, Enigmatic Mentor | — | |
| Kassandra, Eagle Bearer | — | |
| Kastral, the Windcrested | — | |
| Kataki, War's Wage | $0.81 | |
| Katara, the Fearless | $4.38 | |
| Katara, Waterbending Master | $8.13 | |
| Katerina of Myra's Marvels | $0.19 | |
| Kate Stewart | $0.22 | |
| Kathari Bomber | $0.21 | |
| Kathari Remnant | $0.21 | |
| Kathari Screecher | $0.06 |