| Name | Cost | Price |
|---|---|---|
| Khabál Ghoul | $124.83 | |
| Khalni Garden | $1.16 | |
| Khalni Heart Expedition | $0.28 | |
| Khalni Hydra | $14.62 | |
| Khârn the Betrayer | — | |
| Kher Keep | $0.35 | |
| Kheru Spellsnatcher | $0.22 | |
| Khod, Etlan Shiis Envoy | $1.24 | |
| Khorvath Brightflame | — | |
| Khorvath's Fury | $2.42 | |
| Kianne, Dean of Substance // Imbraham, Dean of Theory | $0.32 | |
| Kibo's Bananamobile | — | |
| Kick in the Door | $0.19 | |
| Kickoff Celebrations | $0.13 | |
| Kiddie Coaster | $0.14 | |
| Kiki-Jiki, Mirror Breaker | $16.94 | |
| Kiku, Night's Flower | $5.70 | |
| Kiku's Shadow | $0.30 | |
| Kill! Destroy! | $1.59 | |
| Killer Bees | $47.27 | |
| Killer Cosplay | — | |
| Killer Service | $0.38 | |
| Killer Whale | $0.35 | |
| Killian, Ink Duelist | $0.34 |