| Kamiz, Obscura OculusNew Capenna Commander · 188 | New Capenna Commander | 188 | Mythic Rare | €0.08 |
| Kamiz, Obscura Oculus // Kamiz, Obscura OculusNew Capenna Art Series · 41 | New Capenna Art Series | 41 | — | — |
| Kang DynastyMarvel Super Heroes Commander · 35 | Marvel Super Heroes Commander | 35 | Rare | €0.32 |
| Kang Dynasty (Theme)Marvel Super Heroes Jumpstart Front Cards · 27 | Marvel Super Heroes Jumpstart Front Cards | 27 | — | — |
| Kangee, Aerie KeeperInvasion · 253 | Invasion | 253 | Rare | €2.64 |
| Kangee, Aerie KeeperThe List Tokens · INV-253 | The List Tokens | INV-253 | Rare | €2.27 |
| Kangee, Sky WardenCommander Legends · 283 | Commander Legends | 283 | Uncommon | €0.20 |
| Kangee, Sky WardenCommander Legends · 603 | Commander Legends | 603 | Uncommon | €0.29 |
| Kangee, Sky WardenStarter Commander Decks · 234 | Starter Commander Decks | 234 | Uncommon | $0.19 |
| Kangee, Sky WardenMagic Online Promos · 86326 | Magic Online Promos | 86326 | Uncommon | — |
| Kangee's LieutenantCommander Legends · 26 | Commander Legends | 26 | Uncommon | €0.14 |
| Kangee's LieutenantStarter Commander Decks · 27 | Starter Commander Decks | 27 | Uncommon | $0.15 |
| Kangee's LieutenantThe List Tokens · CMR-26 | The List Tokens | CMR-26 | Uncommon | — |
| Kang PrimeMarvel Super Heroes Commander · 85 | Marvel Super Heroes Commander | 85 | Rare | €0.19 |
| Kang PrimeMarvel Super Heroes Commander · 406 | Marvel Super Heroes Commander | 406 | Rare | $0.73 |
| Kang, Temporal TyrantMarvel Super Heroes · 217 | Marvel Super Heroes | 217 | Uncommon | €0.11 |
| Kang, Temporal TyrantMarvel Super Heroes · 450 | Marvel Super Heroes | 450 | Uncommon | €0.69 |
| Kang the ConquerorMarvel Super Heroes · 62 | Marvel Super Heroes | 62 | Mythic Rare | $0.39 |
| Kang the ConquerorMarvel Super Heroes · 403 | Marvel Super Heroes | 403 | Mythic Rare | €1.16 |
| Kapow!Marvel's Spider-Man · 103 | Marvel's Spider-Man | 103 | Common | €0.03 |
| Kapow!Through the Omenpaths · 111 | Through the Omenpaths | 111 | Common | — |
| Kapow! // Kapow!Marvel's Spider-Man Art Series · 17 | Marvel's Spider-Man Art Series | 17 | — | — |
| Kappa CannoneerEdge of Eternities Commander · 74 | Edge of Eternities Commander | 74 | Rare | $0.37 |
| Kappa CannoneerModern Horizons 3 · 270 | Modern Horizons 3 | 270 | Rare | €0.63 |
| Kappa CannoneerMurders at Karlov Manor Commander · 108 | Murders at Karlov Manor Commander | 108 | Rare | €0.83 |
| Kappa CannoneerModern Horizons 3 · 401 | Modern Horizons 3 | 401 | Rare | $1.85 |
| Kappa CannoneerNeon Dynasty Commander · 14 | Neon Dynasty Commander | 14 | Rare | €0.76 |
| Kappa CannoneerNeon Dynasty Commander · 50 | Neon Dynasty Commander | 50 | Rare | $2.64 |
| Kappa CannoneerMagic Online Promos · 97923 | Magic Online Promos | 97923 | Rare | — |
| Kappa CannoneerFoundations Commander · 64 | Foundations Commander | 64 | Rare | $0.27 |
| Kappa Tech-WreckerKamigawa: Neon Dynasty · 198 | Kamigawa: Neon Dynasty | 198 | Uncommon | €0.15 |
| Kappa Tech-WreckerKamigawa: Neon Dynasty · 348 | Kamigawa: Neon Dynasty | 348 | Uncommon | €0.10 |
| Kappa Tech-WreckerThe List Tokens · NEO-198 | The List Tokens | NEO-198 | Uncommon | $0.12 |
| Kapsho KitefinsFoundations Jumpstart · 318 | Foundations Jumpstart | 318 | Uncommon | €0.14 |
| Kapsho KitefinsMagic 2015 · 66 | Magic 2015 | 66 | Uncommon | €0.07 |
| Karador, Ghost ChieftainDouble Masters 2022 · 238 | Double Masters 2022 | 238 | Mythic Rare | $0.34 |
| Karador, Ghost ChieftainDouble Masters 2022 · 514 | Double Masters 2022 | 514 | Mythic Rare | €0.93 |
| Karador, Ghost ChieftainCommander 2011 · 207 | Commander 2011 | 207 | Mythic Rare | €0.68 |
| Karador, Ghost ChieftainCommander Masters · 342 | Commander Masters | 342 | Rare | €0.24 |
| Karador, Ghost ChieftainCommander Legends · 521 | Commander Legends | 521 | Mythic Rare | $0.45 |
| Karador, Ghost ChieftainCommander Masters · 581 | Commander Masters | 581 | Rare | $0.63 |
| Karador, Ghost ChieftainJudge Gift Cards 2014 · 1 | Judge Gift Cards 2014 | 1 | Rare | €5.09 |
| Karador, Ghost ChieftainCommander 2011 Oversized · 207 | Commander 2011 Oversized | 207 | Mythic Rare | €0.36 |
| Karador, Ghost ChieftainThe List Tokens · CMD-207 | The List Tokens | CMD-207 | Mythic Rare | $0.44 |
| Karador, Ghost ChieftainSecret Lair Drop Tokens · 1646 | Secret Lair Drop Tokens | 1646 | Mythic Rare | €1.56 |
| Karador, Ghost ChieftainSecret Lair Drop Tokens · 1646★ | Secret Lair Drop Tokens | 1646★ | Mythic Rare | $3.41 |
| Karador, Ghost ChieftainMagic Online Promos · 51534 | Magic Online Promos | 51534 | Mythic Rare | — |
| Karador, Ghost ChieftainMagic Online Promos · 86188 | Magic Online Promos | 86188 | Mythic Rare | — |
| Karai, Future of the FootTeenage Mutant Ninja Turtles · 151 | Teenage Mutant Ninja Turtles | 151 | Uncommon | €0.15 |
| Karai, Shadow WarriorTeenage Mutant Ninja Turtles Eternal Tokens · 7 | Teenage Mutant Ninja Turtles Eternal Tokens | 7 | — | €0.13 |