| Kazuul, Tyrant of the CliffsThe Zeta Set · 62 | The Zeta Set | 62 | Uncommon | — |
| Kazuul, Tyrant of the CliffsThe Zeta Set · 183 | The Zeta Set | 183 | Uncommon | — |
| Kazuul, Tyrant of the CliffsThe Zeta Set · 304 | The Zeta Set | 304 | Uncommon | — |
| Kediss, Emberclaw FamiliarCommander Legends · 188 | Commander Legends | 188 | Uncommon | €5.67 |
| Kediss, Emberclaw FamiliarCommander Legends · 573 | Commander Legends | 573 | Uncommon | €1.79 |
| Kediss, Emberclaw FamiliarMagic Online Promos · 86252 | Magic Online Promos | 86252 | Uncommon | — |
| Kediss, Emberclaw FamiliarThe List Tokens · CMR-188 | The List Tokens | CMR-188 | Uncommon | — |
| Keen-Eared SentryAdventures in the Forgotten Realms · 22 | Adventures in the Forgotten Realms | 22 | Uncommon | €0.06 |
| Keen-Eyed RavenAssassin's Creed · 279 | Assassin's Creed | 279 | Uncommon | €0.02 |
| Keening BansheeDuel Decks: Garruk vs. Liliana · 44 | Duel Decks: Garruk vs. Liliana | 44 | Uncommon | €0.10 |
| Keening BansheeRNA Guild Kit · 31 | RNA Guild Kit | 31 | Uncommon | €0.18 |
| Keening BansheeDuel Decks Anthology: Garruk vs. Liliana · 44 | Duel Decks Anthology: Garruk vs. Liliana | 44 | Uncommon | €0.17 |
| Keening BansheeSalvat 2005 · E15 | Salvat 2005 | E15 | Uncommon | €0.07 |
| Keening BansheeRavnica: City of Guilds · 92 | Ravnica: City of Guilds | 92 | Uncommon | €0.10 |
| Keen SensePlanar Chaos · 152 | Planar Chaos | 152 | Uncommon | €1.66 |
| Keen SenseThe List Tokens · PLC-152 | The List Tokens | PLC-152 | Uncommon | €1.79 |
| Keen SenseTime Spiral Remastered · 213 | Time Spiral Remastered | 213 | Uncommon | €1.70 |
| Keensight MentorIkoria: Lair of Behemoths · 18 | Ikoria: Lair of Behemoths | 18 | Uncommon | €0.14 |
| Keeper of FablesThrone of Eldraine · 163 | Throne of Eldraine | 163 | Uncommon | €0.22 |
| Keeper of FablesJumpstart · 407 | Jumpstart | 407 | Uncommon | €0.21 |
| Keeper of FablesThe List Tokens · ELD-163 | The List Tokens | ELD-163 | Uncommon | €0.38 |
| Keeper of FablesZendikar Rising Commander · 71 | Zendikar Rising Commander | 71 | Uncommon | €0.26 |
| Keeper of the BeastsExodus · 112 | Exodus | 112 | Uncommon | $0.24 |
| Keeper of the CadenceThe Brothers' War · 54 | The Brothers' War | 54 | Uncommon | €0.02 |
| Keeper of the DeadExodus · 65 | Exodus | 65 | Uncommon | $0.30 |
| Keeper of the DeadThe List Tokens · EXO-65 | The List Tokens | EXO-65 | Uncommon | €0.14 |
| Keeper of the FlameExodus · 85 | Exodus | 85 | Uncommon | $0.19 |
| Keeper of the LightExodus · 8 | Exodus | 8 | Uncommon | €0.23 |
| Keeper of the MindExodus · 36 | Exodus | 36 | Uncommon | €0.24 |
| Keepsake GorgonConspiracy: Take the Crown · 141 | Conspiracy: Take the Crown | 141 | Uncommon | €0.07 |
| Keepsake GorgonTheros · 93 | Theros | 93 | Uncommon | €0.07 |
| Keepsake GorgonPioneer Masters · 293 | Pioneer Masters | 293 | Uncommon | — |
| Kefnet's MonumentAmonkhet · 231 | Amonkhet | 231 | Uncommon | €0.33 |
| Kefnet's MonumentAmonkhet Remastered · 275 | Amonkhet Remastered | 275 | Uncommon | — |
| Kei TakahashiChronicles Foreign Black Border · 78 | Chronicles Foreign Black Border | 78 | Uncommon | €1.50 |
| Kei TakahashiChronicles · 78 | Chronicles | 78 | Uncommon | €0.06 |
| Kei TakahashiMasters Edition III · 155 | Masters Edition III | 155 | Uncommon | — |
| Keldon ArsonistProphecy · 92 | Prophecy | 92 | Uncommon | $0.12 |
| Keldon ChampionEternal Masters · 135 | Eternal Masters | 135 | Uncommon | €0.06 |
| Keldon ChampionPlanechase · 58 | Planechase | 58 | Uncommon | $0.05 |
| Keldon ChampionPremium Deck Series: Fire and Lightning · 14 | Premium Deck Series: Fire and Lightning | 14 | Uncommon | €0.15 |
| Keldon ChampionThe List Tokens · UDS-90 | The List Tokens | UDS-90 | Uncommon | €0.09 |
| Keldon ChampionUrza's Destiny · 90 | Urza's Destiny | 90 | Uncommon | €0.16 |
| Keldon MegalithsDuel Decks: Jace vs. Chandra · 58 | Duel Decks: Jace vs. Chandra | 58 | Uncommon | €0.14 |
| Keldon MegalithsFuture Sight · 170 | Future Sight | 170 | Uncommon | €0.13 |
| Keldon MegalithsDuel Decks Anthology: Jace vs. Chandra · 58 | Duel Decks Anthology: Jace vs. Chandra | 58 | Uncommon | €0.23 |
| Keldon WarlordUnlimited Edition · 161 | Unlimited Edition | 161 | Uncommon | €3.14 |
| Keldon WarlordRevised Edition · 160 | Revised Edition | 160 | Uncommon | €0.30 |
| Keldon Warlord30th Anniversary Edition · 156 | 30th Anniversary Edition | 156 | Uncommon | €0.76 |
| Keldon Warlord30th Anniversary Edition · 453 | 30th Anniversary Edition | 453 | Uncommon | €51.34 |