| Name | Cost | Price |
|---|---|---|
| Justiciar's Portal | $0.21 | |
| Juxtapose | $0.46 | |
| Juzám Djinn | $1,827.00 | |
| Jwari Disruption // Jwari Ruins | $0.37 | |
| Jwari Scuttler | $0.16 | |
| Jwari Shapeshifter | $9.76 | |
| Jwar Isle Avenger | $0.02 | |
| Jwar Isle Refuge | $0.29 | |
| K-9, Mark I | — | |
| Kaalia of the Vast | $5.35 | |
| Kaalia, Zenith Seeker | $11.08 | |
| Kabira Crossroads | $0.39 | |
| Kabira Outrider | $0.10 | |
| Kabira Takedown // Kabira Plateau | $0.33 | |
| Kabira Vindicator | $0.15 | |
| Kaboom! | $0.49 | |
| Kaervek's Hex | $0.21 | |
| Kaervek's Torch | $0.19 | |
| Kaervek the Merciless | $0.32 | |
| Kaervek, the Punisher | $0.55 | |
| Kaervek, the Spiteful | $0.45 | |
| Kagemaro's Clutch | $0.17 | |
| Kaheera, the Orphanguard | — | |
| Kaijin of the Vanishing Touch | $0.39 |