| Kite ShieldThe List Tokens · M12-210 | The List Tokens | M12-210 | Uncommon | €0.17 |
| KithkeeperLorwyn Eclipsed · 23 | Lorwyn Eclipsed | 23 | Uncommon | €0.04 |
| Kithkin HarbingerLorwyn · 26 | Lorwyn | 26 | Uncommon | €0.12 |
| Kithkin MourncallerLorwyn · 224 | Lorwyn | 224 | Uncommon | €0.20 |
| Kithkin RabbleShadowmoor · 9 | Shadowmoor | 9 | Uncommon | €0.19 |
| Kitsune PalliatorBetrayers of Kamigawa · 14 | Betrayers of Kamigawa | 14 | Uncommon | €0.15 |
| Kjeldoran Elite GuardColdsnap Theme Decks · 34 | Coldsnap Theme Decks | 34 | Uncommon | €0.10 |
| Kjeldoran Elite GuardIce Age · 34 | Ice Age | 34 | Uncommon | $0.16 |
| Kjeldoran FrostbeastIce Age · 296 | Ice Age | 296 | Uncommon | €0.16 |
| Kjeldoran FrostbeastMasters Edition III · 156 | Masters Edition III | 156 | Uncommon | — |
| Kjeldoran GargoyleColdsnap · 10 | Coldsnap | 10 | Uncommon | €0.08 |
| Kjeldoran Home GuardAlliances · 8 | Alliances | 8 | Uncommon | $0.11 |
| Kjeldoran Home GuardColdsnap Theme Decks · 8 | Coldsnap Theme Decks | 8 | Uncommon | €0.13 |
| Kjeldoran Home GuardMasters Edition II · 22 | Masters Edition II | 22 | Uncommon | — |
| Kjeldoran SkycaptainFifth Edition · 45 | Fifth Edition | 45 | Uncommon | €0.15 |
| Kjeldoran SkycaptainIce Age · 39 | Ice Age | 39 | Uncommon | €0.22 |
| Klaw, Sonic SubjugatorMarvel Super Heroes · 103 | Marvel Super Heroes | 103 | Uncommon | €0.06 |
| Klothys's DesignTheros Beyond Death · 176 | Theros Beyond Death | 176 | Uncommon | €0.13 |
| KnifeRavnica: Clue Edition · 10 | Ravnica: Clue Edition | 10 | Uncommon | €0.16 |
| KnifeMurders at Karlov Manor · 134 | Murders at Karlov Manor | 134 | Uncommon | €0.10 |
| KnightfisherBloomburrow · 55 | Bloomburrow | 55 | Uncommon | €0.13 |
| KnighthoodSeventh Edition · 25 | Seventh Edition | 25 | Uncommon | €0.23 |
| KnighthoodSeventh Edition · 25★ | Seventh Edition | 25★ | Uncommon | $0.42 |
| KnighthoodUrza's Legacy · 12 | Urza's Legacy | 12 | Uncommon | $0.38 |
| Knight in _____ ArmorUnfinity · 17 | Unfinity | 17 | Uncommon | €0.04 |
| Knight in _____ ArmorUnfinity · 303 | Unfinity | 303 | Uncommon | $0.34 |
| Knightly ValorCore Set 2019 · 20 | Core Set 2019 | 20 | Uncommon | €0.06 |
| Knightly ValorMagic Origins · 22 | Magic Origins | 22 | Uncommon | €0.08 |
| Knightly ValorWilds of Eldraine: Enchanting Tales · 8 | Wilds of Eldraine: Enchanting Tales | 8 | Uncommon | €0.10 |
| Knight of DawnThe List Tokens · TMP-26 | The List Tokens | TMP-26 | Uncommon | €0.17 |
| Knight of DawnTempest · 26 | Tempest | 26 | Uncommon | €0.23 |
| Knight of Dawn's LightDominaria United · 23 | Dominaria United | 23 | Uncommon | €0.09 |
| Knight of DovesWilds of Eldraine · 19 | Wilds of Eldraine | 19 | Uncommon | €0.04 |
| Knight of DuskTenth Edition · 152 | Tenth Edition | 152 | Uncommon | €0.32 |
| Knight of DuskTempest · 140 | Tempest | 140 | Uncommon | €0.18 |
| Knight of Dusk's ShadowDominaria United · 96 | Dominaria United | 96 | Uncommon | €0.14 |
| Knight of GloryMagic 2013 · 21 | Magic 2013 | 21 | Uncommon | €0.26 |
| Knight of GraceDominaria · 23 | Dominaria | 23 | Uncommon | €0.16 |
| Knight of GraceFoundations · 576 | Foundations | 576 | Uncommon | €0.10 |
| Knight of InfamyMagic 2013 · 96 | Magic 2013 | 96 | Uncommon | $0.20 |
| Knight of MaliceDominaria · 97 | Dominaria | 97 | Uncommon | €0.18 |
| Knight of MaliceFoundations · 608 | Foundations | 608 | Uncommon | €0.14 |
| Knight of MeadowgrainDuel Decks: Knights vs. Dragons · 5 | Duel Decks: Knights vs. Dragons | 5 | Uncommon | €0.42 |
| Knight of MeadowgrainLorwyn · 28 | Lorwyn | 28 | Uncommon | €0.40 |
| Knight of MeadowgrainThe List Tokens · DDG-5 | The List Tokens | DDG-5 | Uncommon | €0.19 |
| Knight of ObligationGatecrash · 18 | Gatecrash | 18 | Uncommon | €0.14 |
| Knight of StromgaldFifth Edition · 171 | Fifth Edition | 171 | Uncommon | $1.27 |
| Knight of StromgaldAnthologies · 26 | Anthologies | 26 | Uncommon | $0.38 |
| Knight of StromgaldIce Age · 138 | Ice Age | 138 | Uncommon | €4.31 |
| Knight of StromgaldPro Tour Collector Set Tokens · gb138 | Pro Tour Collector Set Tokens | gb138 | Uncommon | €1.13 |