| Key to the CityThe Brothers' War Retro Artifacts · 27 | The Brothers' War Retro Artifacts | 27 | Rare | €0.28 |
| Key to the CityThe Brothers' War Retro Artifacts · 90 | The Brothers' War Retro Artifacts | 90 | Rare | $0.60 |
| Key to the CityThe Brothers' War Retro Artifacts · 90z | The Brothers' War Retro Artifacts | 90z | Rare | €55.57 |
| Key to the CityCommander 2019 · 216 | Commander 2019 | 216 | Rare | €0.20 |
| Key to the CityCommander 2021 · 248 | Commander 2021 | 248 | Rare | €0.32 |
| Key to the CityFinal Fantasy Commander · 348 | Final Fantasy Commander | 348 | Rare | €0.23 |
| Key to the CityKaladesh · 220 | Kaladesh | 220 | Rare | €0.27 |
| Key to the CityKaladesh Promos · 220s | Kaladesh Promos | 220s | Rare | €1.05 |
| Key to the CityKaladesh Remastered · 248 | Kaladesh Remastered | 248 | Rare | — |
| Key to the City // Key to the CityThe Brothers' War Art Series · 65 | The Brothers' War Art Series | 65 | — | — |
| Key to the Side-DoorThe Hobbit · 175 | The Hobbit | 175 | Uncommon | €0.09 |
| KezzerdrixSecret Lair Drop Tokens · 826 | Secret Lair Drop Tokens | 826 | Rare | €4.25 |
| KezzerdrixTempest · 139 | Tempest | 139 | Rare | $0.55 |
| KezzerdrixTempest Remastered · 107 | Tempest Remastered | 107 | Rare | — |
| KezzerdrixVintage Masters · 124 | Vintage Masters | 124 | Uncommon | — |
| Khaaaaaaaaaaaannn!Star Trek · 154 | Star Trek | 154 | Uncommon | €0.10 |
| Khabál GhoulArabian Nights · 30 | Arabian Nights | 30 | Uncommon | €72.23 |
| Khabál GhoulMasters Edition · 75 | Masters Edition | 75 | Rare | — |
| Khabál GhoulMagic Online Promos · 215 | Magic Online Promos | 215 | Rare | — |
| Khalni Ambush // Khalni TerritoryZendikar Rising · 192 | Zendikar Rising | 192 | Uncommon | $0.41 |
| Khalni Ambush // Khalni TerritoryPioneer Masters · 181 | Pioneer Masters | 181 | Common | — |
| Khalni GardenArchenemy · 127 | Archenemy | 127 | Common | $1.42 |
| Khalni GardenCommander 2013 · 302 | Commander 2013 | 302 | Common | €0.15 |
| Khalni GardenCommander 2018 · 262 | Commander 2018 | 262 | Common | $1.21 |
| Khalni GardenDuel Decks: Nissa vs. Ob Nixilis Tokens · 28 | Duel Decks: Nissa vs. Ob Nixilis Tokens | 28 | Common | $2.25 |
| Khalni GardenPlanechase Anthology · 122 | Planechase Anthology | 122 | Common | €0.24 |
| Khalni GardenPlanechase 2012 · 122 | Planechase 2012 | 122 | Common | $2.15 |
| Khalni GardenThe List Tokens · DDR-28 | The List Tokens | DDR-28 | Common | $0.77 |
| Khalni GardenWorldwake · 138 | Worldwake | 138 | Common | €1.75 |
| Khalni GardenJumpstart: Historic Horizons · 770 | Jumpstart: Historic Horizons | 770 | Common | — |
| Khalni GardenLegendary Cube Prize Pack · 143 | Legendary Cube Prize Pack | 143 | Uncommon | — |
| Khalni GemZendikar · 205 | Zendikar | 205 | Uncommon | €0.26 |
| Khalni Heart ExpeditionCommander 2018 · 154 | Commander 2018 | 154 | Common | €0.22 |
| Khalni Heart ExpeditionCommander Legends · 428 | Commander Legends | 428 | Common | €0.16 |
| Khalni Heart ExpeditionDuel Decks: Zendikar vs. Eldrazi Tokens · 18 | Duel Decks: Zendikar vs. Eldrazi Tokens | 18 | Common | €0.30 |
| Khalni Heart ExpeditionCommander Masters · 899 | Commander Masters | 899 | Common | €0.20 |
| Khalni Heart ExpeditionArchenemy: Nicol Bolas · 67 | Archenemy: Nicol Bolas | 67 | Common | €0.10 |
| Khalni Heart ExpeditionJumpstart 2022 · 90 | Jumpstart 2022 | 90 | Common | €0.24 |
| Khalni Heart ExpeditionThe List Tokens · C18-154 | The List Tokens | C18-154 | Common | €0.23 |
| Khalni Heart ExpeditionZendikar Rising Commander · 72 | Zendikar Rising Commander | 72 | Common | €0.17 |
| Khalni Heart ExpeditionZendikar · 167 | Zendikar | 167 | Common | €0.15 |
| Khalni HydraRise of the Eldrazi · 192 | Rise of the Eldrazi | 192 | Mythic Rare | €8.48 |
| Khalni HydraThe List Tokens · ROE-192 | The List Tokens | ROE-192 | Mythic Rare | €11.01 |
| Kharasha FoothillsMarch of the Machine Commander · 149 | March of the Machine Commander | 149 | Common | €0.25 |
| Kharasha FoothillsPlanechase 2012 Planes · 22 | Planechase 2012 Planes | 22 | Common | €0.44 |
| Kharasha FoothillsPlanechase Anthology Planes · 43 | Planechase Anthology Planes | 43 | Common | €0.30 |
| Kharis & The Beholder2018 Heroes of the Realm · 1 | 2018 Heroes of the Realm | 1 | Mythic Rare | — |
| Khârn the BetrayerWarhammer 40,000 Commander · 79 | Warhammer 40,000 Commander | 79 | Rare | $5.66 |
| Khârn the BetrayerWarhammer 40,000 Commander · 79★ | Warhammer 40,000 Commander | 79★ | Rare | $16.34 |
| Khenra CharioteerAmonkhet · 201 | Amonkhet | 201 | Uncommon | €0.15 |