| Karplusan StriderTenth Edition · 272 | Tenth Edition | 272 | Uncommon | $0.05 |
| Karplusan StriderColdsnap · 112 | Coldsnap | 112 | Uncommon | €0.13 |
| Karplusan StriderModern Masters 2015 · 145 | Modern Masters 2015 | 145 | Uncommon | €0.03 |
| Karplusan WolverineColdsnap · 87 | Coldsnap | 87 | Common | $0.13 |
| Karplusan WolverineSalvat 2005 · K18 | Salvat 2005 | K18 | Common | €1.72 |
| Karplusan YetiNinth Edition · 198 | Ninth Edition | 198 | Rare | $0.22 |
| Karplusan YetiNinth Edition · 198★ | Ninth Edition | 198★ | Rare | $0.22 |
| Karplusan YetiIce Age · 197 | Ice Age | 197 | Rare | $0.43 |
| Karrthus, Tyrant of JundDouble Masters · 205 | Double Masters | 205 | Mythic Rare | €2.94 |
| Karrthus, Tyrant of JundAlara Reborn · 117 | Alara Reborn | 117 | Mythic Rare | €3.19 |
| Karrthus, Tyrant of JundCommander's Arsenal Oversized · 7 | Commander's Arsenal Oversized | 7 | Mythic Rare | €1.90 |
| Karrthus, Tyrant of JundThe List Tokens · ARB-117 | The List Tokens | ARB-117 | Mythic Rare | €2.11 |
| Karrthus, Tyrant of JundSecret Lair Drop Tokens · 1250 | Secret Lair Drop Tokens | 1250 | Mythic Rare | €13.08 |
| KarstodermDarksteel · 77 | Darksteel | 77 | Uncommon | €0.03 |
| KarstodermThe List Tokens · DST-77 | The List Tokens | DST-77 | Uncommon | €0.04 |
| Karsus DepthguardMarch of the Machine · 150 | March of the Machine | 150 | Common | €0.06 |
| Karumonix, the Rat KingPhyrexia: All Will Be One · 98 | Phyrexia: All Will Be One | 98 | Rare | €0.62 |
| Karumonix, the Rat KingPhyrexia: All Will Be One · 282 | Phyrexia: All Will Be One | 282 | Rare | €0.65 |
| Karumonix, the Rat KingPhyrexia: All Will Be One · 307 | Phyrexia: All Will Be One | 307 | Rare | €0.51 |
| Karumonix, the Rat KingPhyrexia: All Will Be One · 439 | Phyrexia: All Will Be One | 439 | Rare | €11.72 |
| Karumonix, the Rat KingPhyrexia: All Will Be One Promos · 98p | Phyrexia: All Will Be One Promos | 98p | Rare | €0.38 |
| Karumonix, the Rat KingPhyrexia: All Will Be One Promos · 98s | Phyrexia: All Will Be One Promos | 98s | Rare | €1.99 |
| Karumonix, the Rat King // Karumonix, the Rat KingPhyrexia: All Will Be One Art Series · 70 | Phyrexia: All Will Be One Art Series | 70 | — | — |
| Karvanista, Loyal Lupari // Lupari ShieldDoctor Who · 106 | Doctor Who | 106 | Rare | €0.23 |
| Karvanista, Loyal Lupari // Lupari ShieldDoctor Who · 711 | Doctor Who | 711 | Rare | €2.77 |
| Kaseto, Orochi ArchmageCommander 2015 · 47 | Commander 2015 | 47 | Mythic Rare | €0.36 |
| Kaseto, Orochi ArchmageCommander 2021 · 221 | Commander 2021 | 221 | Mythic Rare | €0.05 |
| Kaseto, Orochi ArchmageYear of the Snake 2025 Tokens · 5 | Year of the Snake 2025 Tokens | 5 | Mythic Rare | €10.31 |
| Kaseto, Orochi ArchmageThe List Tokens · C21-221 | The List Tokens | C21-221 | Mythic Rare | €0.41 |
| Kaseto, Orochi ArchmageLegendary Cube Prize Pack · 109 | Legendary Cube Prize Pack | 109 | Rare | — |
| Kashi-Tribe EliteSaviors of Kamigawa · 135 | Saviors of Kamigawa | 135 | Uncommon | €0.33 |
| Kashi-Tribe ReaverChampions of Kamigawa · 220 | Champions of Kamigawa | 220 | Uncommon | €0.17 |
| Kashi-Tribe WarriorsChampions of Kamigawa · 221 | Champions of Kamigawa | 221 | Common | €0.14 |
| Kasimir the Lone WolfLegends · 237 | Legends | 237 | Uncommon | $2.55 |
| Kasla, the Broken HaloMarch of the Machine Commander · 4 | March of the Machine Commander | 4 | Mythic Rare | €0.25 |
| Kasla, the Broken HaloMarch of the Machine Commander · 92 | March of the Machine Commander | 92 | Mythic Rare | €0.54 |
| Kasla, the Broken HaloMarch of the Machine Commander · 137 | March of the Machine Commander | 137 | Mythic Rare | €0.12 |
| Kaslem's Stonetree // Kaslem's StriderThe Lost Caverns of Ixalan · 197 | The Lost Caverns of Ixalan | 197 | Common | €0.02 |
| Kasmina, Enigma SageStrixhaven: School of Mages Promos · 196p | Strixhaven: School of Mages Promos | 196p | Mythic Rare | €3.13 |
| Kasmina, Enigma SageStrixhaven: School of Mages Promos · 196s | Strixhaven: School of Mages Promos | 196s | Mythic Rare | €7.29 |
| Kasmina, Enigma SageStrixhaven: School of Mages · 196 | Strixhaven: School of Mages | 196 | Mythic Rare | €6.36 |
| Kasmina, Enigma SageStrixhaven: School of Mages · 279 | Strixhaven: School of Mages | 279 | Mythic Rare | €9.01 |
| Kasmina, Enigma SageMagic Online Promos · 90272 | Magic Online Promos | 90272 | Mythic Rare | — |
| Kasmina, Enigma Sage // Kasmina, Enigma SageStrixhaven Art Series · 29 | Strixhaven Art Series | 29 | — | — |
| Kasmina, Enigma Sage // Kasmina, Enigma SageStrixhaven Art Series · 29s | Strixhaven Art Series | 29s | — | — |
| Kasmina, Enigmatic MentorJumpstart 2022 · 60 | Jumpstart 2022 | 60 | Uncommon | €0.39 |
| Kasmina, Enigmatic MentorThe List Tokens · WAR-56 | The List Tokens | WAR-56 | Uncommon | €0.20 |
| Kasmina, Enigmatic MentorWar of the Spark Promos · 56s | War of the Spark Promos | 56s | Uncommon | $0.86 |
| Kasmina, Enigmatic MentorWar of the Spark Promos · 56s★ | War of the Spark Promos | 56s★ | Uncommon | €20.21 |
| Kasmina, Enigmatic MentorSecret Lair Drop Tokens · 507 | Secret Lair Drop Tokens | 507 | Uncommon | €2.35 |