| Name | Edition | Colour | Type | Cost | Power | Rarity | $ |
|---|---|---|---|---|---|---|---|
| Kobold Drill Sergeant | LG | Red | Summon Drill Sergeant | 1R | 1/2 | Uncommon | 5.83 |
| Kobold Overlord | LG | Red | Summon Lord | 1R | 1/2 | Rare | 12.98 |
| Kobold Taskmaster | LG | Red | Summon Taskmaster | 1R | 1/2 | Uncommon | 5.37 |
| Kobold Taskmaster | TSS | Red | Creature - Kobold | 1R | 1/2 | Uncommon | 3.74 |
| Kobolds of Kher Keep | LG | Red | Summon Kobolds | 0 | 0/1 | Common | 2.90 |
| Kodama of the Center Tree | BK | Green | Legendary Creature - Spirit | 4G | */* | Rare | 2.63 |
| Kodama of the North Tree | CK | Green | Legendary Creature - Spirit | 2GGG | 6/4 | Rare | 4.01 |
| Kodama of the South Tree | CK | Green | Legendary Creature - Spirit | 2GG | 4/4 | Rare | 3.09 |
| Kodama's Might | CK | Green | Instant - Arcane | G | Common | 2.23 | |
| Kodama's Reach | CK | Green | Sorcery - Arcane | 2G | Common | 2.46 | |
| Kokusho, the Evening Star | CK | Black | Legendary Creature - Dragon Spirit | 4BB | 5/5 | Rare | 11.83 |
| Konda's Banner | CK | Artifact | Legendary Artifact - Equipment | 2 | Rare | 2.95 | |
| Konda's Hatamoto | CK | White | Creature - Human Samurai | 1W | 1/2 | Uncommon | 2.21 |
| Konda, Lord of Eiganjo | CK | White | Legendary Creature - Human Samurai | 5WW | 3/3 | Rare | 3.72 |
| Kongming's Contraptions | P3K | White | Summon Creature - Soldiers | 3W | 2/4 | Rare | 9.04 |
| Kongming, "Sleeping Dragon" | P3K | White | Summon Creature - Legend | 2WW | 2/2 | Rare | 12.67 |
| Kookus | VI | Red | Summon Djinn | 3RR | 3/5 | Rare | 2.76 |
| Kor Chant | EX | White | Instant | 2W | Common | 3.04 | |
| Kor Dirge | PC | Black | Instant | 2B | Uncommon | 0.16 | |
| Kor Haven | NE | Land | Legendary Land | Rare | 2.98 | ||
| Korlash, Heir to Blackblade | FS | Black | Legendary Creature - Zombie Warrior | 2BB | */* | Rare | 4.48 |
| Korlash, Heir to Blackblade (FS Prerelease) | P | Black | Legendary Creature - Zombie Warrior | 2BB | */* | Rare | 31.50 |
| Kormus Bell | UN | Artifact | Continuous Artifact | 4 | Rare | 4.43 | |
| Kormus Bell | RV | Artifact | Artifact | 4 | Rare | 0.52 | |
| Kormus Bell | B | Artifact | Continuous Artifact | 4 | Rare | 15.02 | |
| Kormus Bell | A | Artifact | Continuous Artifact | 4 | Rare | 18.67 | |
| Kormus Bell | 4E | Artifact | Artifact | 4 | Rare | 0.60 | |
| Kormus Bell | CE | Artifact | Continuous Artifact | 4 | Rare | 13.59 | |
| Koskun Falls | HL | Black | Echt World | 2BB | Uncommon | 3.22 | |
| Koskun Keep | HL | Land | Land | Uncommon | 2.91 |