| Kardur, DoomscourgeDuskmourn: House of Horror Commander · 223 | Duskmourn: House of Horror Commander | 223 | Uncommon | €0.09 |
| Kardur, DoomscourgeKaldheim · 216 | Kaldheim | 216 | Uncommon | $0.63 |
| Kardur, DoomscourgeKaldheim · 324 | Kaldheim | 324 | Uncommon | $0.46 |
| Kardur, DoomscourgeMagic Online Promos · 88378 | Magic Online Promos | 88378 | Uncommon | — |
| Kardur's Vicious ReturnKaldheim · 217 | Kaldheim | 217 | Uncommon | €0.14 |
| Kargan WarleaderZendikar Rising · 224 | Zendikar Rising | 224 | Uncommon | €0.09 |
| Kargan WarleaderZendikar Rising · 391 | Zendikar Rising | 391 | Uncommon | €0.19 |
| Karlov WatchdogMurders at Karlov Manor · 20 | Murders at Karlov Manor | 20 | Uncommon | €0.07 |
| KarmaUnlimited Edition · 27 | Unlimited Edition | 27 | Uncommon | $2.78 |
| KarmaRevised Edition · 26 | Revised Edition | 26 | Uncommon | $0.32 |
| Karma30th Anniversary Edition · 26 | 30th Anniversary Edition | 26 | Uncommon | €0.21 |
| Karma30th Anniversary Edition · 323 | 30th Anniversary Edition | 323 | Uncommon | $10.00 |
| KarmaFourth Edition Foreign Black Border · 32 | Fourth Edition Foreign Black Border | 32 | Uncommon | €1.15 |
| KarmaFourth Edition · 32 | Fourth Edition | 32 | Uncommon | €0.20 |
| KarmaFifth Edition · 42 | Fifth Edition | 42 | Uncommon | $0.16 |
| KarmaEighth Edition · 28 | Eighth Edition | 28 | Uncommon | €0.26 |
| KarmaEighth Edition · 28★ | Eighth Edition | 28★ | Uncommon | $0.33 |
| KarmaCollectors' Edition · 27 | Collectors' Edition | 27 | Uncommon | €2.98 |
| KarmaIntl. Collectors' Edition · 27 | Intl. Collectors' Edition | 27 | Uncommon | €1.88 |
| KarmaForeign Black Border · 26 | Foreign Black Border | 26 | Uncommon | €0.92 |
| KarmaLimited Edition Alpha · 26 | Limited Edition Alpha | 26 | Uncommon | €60.98 |
| KarmaLimited Edition Beta · 27 | Limited Edition Beta | 27 | Uncommon | €24.66 |
| KarmaPro Tour Collector Set Tokens · bl32sb | Pro Tour Collector Set Tokens | bl32sb | Uncommon | $0.44 |
| KarmaPro Tour Collector Set Tokens · pp32sb | Pro Tour Collector Set Tokens | pp32sb | Uncommon | €0.40 |
| KarmaSummer Magic / Edgar · 26 | Summer Magic / Edgar | 26 | Uncommon | — |
| Karok WranglerStrixhaven: School of Mages · 135 | Strixhaven: School of Mages | 135 | Uncommon | €0.10 |
| Karolina Dean, RunawayMarvel Super Heroes Commander · 694 | Marvel Super Heroes Commander | 694 | Uncommon | $3.40 |
| Karona's ZealotMasters 25 · 18 | Masters 25 | 18 | Uncommon | $0.02 |
| Karona's ZealotScourge · 18 | Scourge | 18 | Uncommon | €0.07 |
| KarooCommander 2014 · 303 | Commander 2014 | 303 | Uncommon | €0.17 |
| KarooThe List Tokens · VIS-165 | The List Tokens | VIS-165 | Uncommon | $0.30 |
| KarooThe List Tokens · C14-303 | The List Tokens | C14-303 | Uncommon | €0.07 |
| KarooVisions · 165 | Visions | 165 | Uncommon | €0.62 |
| Karoo MeerkatMirage · 225 | Mirage | 225 | Uncommon | $0.16 |
| Karplusan GiantIce Age · 196 | Ice Age | 196 | Uncommon | $0.27 |
| Karplusan GiantMasters Edition II · 133 | Masters Edition II | 133 | Uncommon | — |
| Karplusan HoundDominaria · 277 | Dominaria | 277 | Uncommon | $0.12 |
| Karplusan StriderTenth Edition · 272 | Tenth Edition | 272 | Uncommon | $0.05 |
| Karplusan StriderColdsnap · 112 | Coldsnap | 112 | Uncommon | €0.12 |
| Karplusan StriderModern Masters 2015 · 145 | Modern Masters 2015 | 145 | Uncommon | €0.03 |
| KarstodermDarksteel · 77 | Darksteel | 77 | Uncommon | €0.04 |
| KarstodermThe List Tokens · DST-77 | The List Tokens | DST-77 | Uncommon | €0.04 |
| Kashi-Tribe EliteSaviors of Kamigawa · 135 | Saviors of Kamigawa | 135 | Uncommon | €0.29 |
| Kashi-Tribe ReaverChampions of Kamigawa · 220 | Champions of Kamigawa | 220 | Uncommon | $0.17 |
| Kasimir the Lone WolfLegends · 237 | Legends | 237 | Uncommon | €2.33 |
| Kasmina, Enigmatic MentorJumpstart 2022 · 60 | Jumpstart 2022 | 60 | Uncommon | €0.50 |
| Kasmina, Enigmatic MentorThe List Tokens · WAR-56 | The List Tokens | WAR-56 | Uncommon | €0.18 |
| Kasmina, Enigmatic MentorWar of the Spark Promos · 56s | War of the Spark Promos | 56s | Uncommon | $0.97 |
| 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 | €1.68 |