| 42 | Knowledge Is Power | Fay Dalton | White/Blue | R | Murders at Karlov Manor Commander |
| 352 | Knowledge Is Power | Fay Dalton | White/Blue | R | Murders at Karlov Manor Commander |
| Kobold Drill Sergeant | Julie Baroh | Red | U | Legends |
| 104 | Kobold Drill Sergeant | Julie Baroh | Red | U | Masters Edition III |
| Kobold Taskmaster | Randy Asplund-Faith | Red | U | Legends |
| 65 | Kobold Taskmaster | Randy Asplund | Red | S | Time Spiral "Timeshifted" |
| 106 | Kobold Taskmaster | Randy Asplund | Red | C | Masters Edition III |
| Kobolds of Kher Keep | Julie Baroh | Red | C | Legends |
| 107 | Kobolds of Kher Keep | Julie Baroh | Red | C | Masters Edition III |
| 194 | Kobolds of Kher Keep | Paolo Parente | Red | C | Mystery Booster 2: Convention Edition |
| 227 | Kodama of the East Tree | Daarken | Green | R | Bloomburrow Commander |
| 239 | Kodama of the East Tree | Daarken | Green | R | Commander Legends |
| 582 | Kodama of the East Tree | Daarken | Green | R | Commander Legends |
| 223 | Kodama of the South Tree | Ron Spears | Green | R | Champions of Kamigawa |
| 199 | Kodama of the West Tree | Daarken | Green | M | Kamigawa: Neon Dynasty |
| 392 | Kodama of the West Tree | TAPI岡/TAPIOCA | Green | M | Kamigawa: Neon Dynasty |
| 477 | Kodama of the West Tree | Daarken | Green | M | Kamigawa: Neon Dynasty |
| 224 | Kodama's Might | Terese Nielsen | Green | C | Champions of Kamigawa |
| 73 | Kodama's Reach | John Avon | Green | C | Zendikar Rising Commander |
| 120 | Kodama's Reach | Sam Burley | Green | C | Kamigawa: Neon Dynasty Commander |
| 134 | Kodama's Reach | Sam Burley | Green | C | Dominaria United Commander |
| 151 | Kodama's Reach | Heather Hudson | Green | C | Modern Masters |
| 154 | Kodama's Reach | Heather Hudson | Green | C | Commander 2017 |
| 155 | Kodama's Reach | Heather Hudson | Green | C | Commander 2016 |
| 163 | Kodama's Reach | Heather Hudson | Green | C | Magic: The Gathering-Commander |
| 171 | Kodama's Reach | John Avon | Green | C | Ultimate Masters |
| 180 | Kodama's Reach | John Avon | Green | C | Ikoria Commander |
| 188 | Kodama's Reach | Heather Hudson | Green | C | Commander 2015 |
| 196 | Kodama's Reach | Heather Hudson | Green | C | Outlaws of Thunder Junction Commander |
| 197 | Kodama's Reach | John Avon | Green | C | Commander 2021 |
| 225 | Kodama's Reach | Heather Hudson | Green | C | Champions of Kamigawa |
| 245 | Kodama's Reach | Heather Hudson | Green | C | The Lost Caverns of Ixalan Commander |
| 298 | Kodama's Reach | John Avon | Green | C | Streets of New Capenna Commander |
| 300 | Kodama's Reach | John Avon | Green | C | Commander Masters |
| 306 | Kodama's Reach | John Avon | Green | C | March of the Machine Commander |
| 429 | Kodama's Reach | John Avon | Green | C | Commander Legends |
| 649 | Kodama's Reach | Ron Spencer | Green | C | Commander Masters |
| 681 | Kodama's Reach | John Avon | Green | C | Commander Legends |
| 826 | Kodama's Reach | Sam Burley | Green | C | Commander Legends: Battle for Baldur's Gate |
| 55 | Koilos Roc | Antonio José Manzanedo | Blue | C | The Brothers' War |
| 9 | Kokusho, the Evening Star | Tsutomu Kawade | Black | R | From the Vault: Dragons |
| 89 | Kokusho, the Evening Star | Tsutomu Kawade | Black | M | Modern Masters |
| 95 | Kokusho, the Evening Star | Slawomir Maniak | Black | R | Iconic Masters |
| 122 | Kokusho, the Evening Star | Tsutomu Kawade | Black | R | Champions of Kamigawa |
| 143 | Kolaghan Aspirant | Aaron Miller | Red | C | Dragons of Tarkir |
| 144 | Kolaghan Forerunners | Jason A. Engle | Red | U | Dragons of Tarkir |
| 107 | Kolaghan Skirmisher | Anthony Palumbo | Black | C | Dragons of Tarkir |
| 145 | Kolaghan Stormsinger | Scott Murphy | Red | C | Dragons of Tarkir |
| 155 | Kolaghan, the Storm's Fury | Jaime Jones | Black/Red | R | Fate Reforged |
| 176 | Kolaghan, the Storm's Fury | Jaime Jones | Black/Red | R | Commander 2017 |
| 21 | Kolaghan's Command | Daarken | Black/Red | R | Historic Anthology 5 |
| 224 | Kolaghan's Command | Daarken | Black/Red | R | Dragons of Tarkir |
| 239 | Kolaghan's Command | Daarken | Black/Red | R | Double Masters 2022 |
| 268 | Kolaghan's Command | Daarken | Black/Red | R | Modern Horizons 3 Commander |
| 381 | Kolaghan's Command | Alex Horley-Orlandelli | Black/Red | R | Double Masters 2022 |
| 515 | Kolaghan's Command | Daarken | Black/Red | R | Double Masters 2022 |
| 220 | Koll, the Forgemaster | Bram Sels | White/Red | U | Kaldheim |
| 325 | Koll, the Forgemaster | Nico Delort | White/Red | U | Kaldheim |
| 181 | Kolvori, God of Kinship | Grzegorz Rutkowski | Green | R | Kaldheim |
| 318 | Kolvori, God of Kinship | Dibujante Nocturno | Green | R | Kaldheim |
| 213 | Koma, Cosmos Serpent | Jesper Ejsing | Blue/Green | M | Murders at Karlov Manor Commander |
| 221 | Koma, Cosmos Serpent | Jesper Ejsing | Blue/Green | M | Kaldheim |
| 326 | Koma, Cosmos Serpent | rishxxv | Blue/Green | M | Kaldheim |
| 102 | Koma's Faithful | Caroline Gariba | Black | C | Kaldheim |
| 187 | Kona, Rescue Beastie | Brian Valeza | Green | R | Duskmourn: House of Horror |
| 299 | Kona, Rescue Beastie | Brian Valeza | Green | R | Duskmourn: House of Horror |
| 358 | Kona, Rescue Beastie | Sam Wolfe Connelly | Green | R | Duskmourn: House of Horror |
| 259 | Konda's Banner | Donato Giancola | | R | Champions of Kamigawa |
| 31 | Konda's Hatamoto | Lars Grant-West | White | U | Champions of Kamigawa |
| 9 | Kongming, "Sleeping Dragon" | Gao Yan | White | R | Portal Three Kingdoms |
| 16 | Kongming, "Sleeping Dragon" | Gao Yan | White | R | Commander 2013 Edition |
| 16 | Kongming, "Sleeping Dragon" | Gao Yan | White | R | Masters Edition III |
| 20 | Kongming, "Sleeping Dragon" | Gao Yan | White | U | Masters 25 |
| 33 | Kongming, "Sleeping Dragon" | Gao Yan | White | R | Vintage Masters |
| 10 | Kongming's Contraptions | Jiaming | White | R | Portal Three Kingdoms |
| Kookus | Scott Hampton | Red | R | Visions |
| 61 | Kopala, Warden of Waves | Magali Villeneuve | Blue | R | Ixalan |
| 160 | Kopala, Warden of Waves | Magali Villeneuve | Blue | R | The Lost Caverns of Ixalan Commander |
| 21 | Kor Blademaster | Darren Tan | White | U | Zendikar Rising |
| 35 | Kor Castigator | Greg Opalinski | White | C | Battle for Zendikar |
| 13 | Kor Duelist | Izzy | White | U | Game Night: Free-For-All |
| 19 | Kor Duelist | Izzy | White | U | Zendikar |
| 22 | Kor Duelist | Izzy | White | U | Modern Masters 2015 Edition |
| 36 | Kor Entanglers | Jason Rainville | White | U | Battle for Zendikar |
| 10 | Kor Hookmaster | Wayne Reynolds | White | C | Modern Masters 2017 Edition |
| 12 | Kor Hookmaster | Wayne Reynolds | White | C | Duel Decks: Elspeth vs. Tezzeret |
| 18 | Kor Hookmaster | Wayne Reynolds | White | C | Eternal Masters |
| 20 | Kor Hookmaster | Wayne Reynolds | White | C | Zendikar |
| 52 | Kor Hookmaster | Wayne Reynolds | White | C | Duel Decks: Speed vs. Cunning |
| 30 | Kor Line-Slinger | Steve Prescott | White | C | Rise of the Eldrazi |
| 3 | Kor Sanctifiers | Dan Scott | White | C | Planechase |
| 22 | Kor Sanctifiers | Dan Scott | White | C | Zendikar |
| 73 | Kor Sanctifiers | Dan Scott | White | C | Commander 2015 |
| 76 | Kor Sanctifiers | Dan Scott | White | C | Commander 2014 |
| 23 | Kor Scythemaster | Ryan Pancoast | White | C | Oath of the Gatewatch |
| 24 | Kor Sky Climber | Victor Adame Minguez | White | C | Oath of the Gatewatch |
| 8 | Kor Skyfisher | Dan Scott | White | C | Duel Decks: Elspeth vs. Tezzeret |
| 11 | Kor Skyfisher | Dan Scott | White | C | Modern Masters 2017 Edition |
| 16 | Kor Skyfisher | Dan Scott | White | C | Duel Decks: Elspeth vs. Kiora |
| 23 | Kor Skyfisher | Dan Scott | White | C | Zendikar |
| 66 | Kor Skyfisher | Dan Scott | White | C | Jumpstart: Historic Horizons |
| 9 | Kor Spiritdancer | Scott Chou | White | R | Planechase Anthology |
| 9 | Kor Spiritdancer | Scott Chou | White | R | Planechase 2012 Edition |
| 31 | Kor Spiritdancer | Scott Chou | White | R | Rise of the Eldrazi |
| 69 | Kor Spiritdancer | Nils Hamm | White | R | Wilds of Eldraine Commander |
| 93 | Kor Spiritdancer | Scott Chou | White | R | Battlebond |
| 116 | Kor Spiritdancer | Scott Chou | White | R | Jumpstart |
| 87 | Korlash, Heir to Blackblade | Daarken | Black | R | Future Sight |
| 238 | Korlessa, Scale Singer | Jesper Ejsing | Blue/Green | U | Alchemy Horizons: Baldur's Gate |
| 279 | Korlessa, Scale Singer | Pedro Potier | Blue/Green | U | Alchemy Horizons: Baldur's Gate |
| 280 | Korlessa, Scale Singer | Jesper Ejsing | Blue/Green | U | Commander Legends: Battle for Baldur's Gate |
| 427 | Korlessa, Scale Singer | Pedro Potier | Blue/Green | U | Commander Legends: Battle for Baldur's Gate |
| Kormus Bell | Christopher Rush | | R | Fourth Edition |
| Kormus Bell | Christopher Rush | | R | Revised Edition |
| Kormus Bell | Christopher Rush | | R | Unlimited Edition |
| Kormus Bell | Christopher Rush | | R | Limited Edition Beta |
| Kormus Bell | Christopher Rush | | R | Limited Edition Alpha |
| 210 | Kormus Bell | Christopher Rush | | R | Masters Edition IV |
| 329 | Korvold, Fae-Cursed King | Wisnu Tan | Black/Red/Green | M | Throne of Eldraine |
| 26 | Kosei, Penitent Warlord | Matt Stewart | Green | R | Kamigawa: Neon Dynasty Commander |
| 67 | Kosei, Penitent Warlord | Matt Stewart | Green | R | Kamigawa: Neon Dynasty Commander |
| Koskun Falls | Rob Alexander | Black | R | Homelands |
| Koskun Keep | Pat Morrissey | | U | Homelands |
| 138 | Koth, Fire of Resistance | Eric Wilkerson | Red | R | Phyrexia: All Will Be One |
| 338 | Koth, Fire of Resistance | 七片藍/AI NANAHIRA | Red | R | Phyrexia: All Will Be One |
| 104 | Kothophed, Soul Hoarder | Jakub Kasper | Black | R | Magic Origins |
| 114 | Kothophed, Soul Hoarder | Jakub Kasper | Black | R | Dominaria United Commander |
| 431 | Kothophed, Soul Hoarder | Jakub Kasper | Black | R | Jumpstart 2022 |
| 68 | Koth's Courier | Wayne Reynolds | Red | C | Mirrodin Besieged |
| 228 | Kotose, the Silent Spider | Marta Nael | Blue/Black | R | Kamigawa: Neon Dynasty |
| 351 | Kotose, the Silent Spider | п猫Ｒ/PENEKOR | Blue/Black | R | Kamigawa: Neon Dynasty |
| 490 | Kotose, the Silent Spider | Marta Nael | Blue/Black | R | Kamigawa: Neon Dynasty |
| 502 | Kozilek, Compleated (playtest) | Will Liu | | R | Mystery Booster 2: Convention Edition |
| 2 | Kozilek, the Great Distortion | Aleksi Briclot | | M | Commander Masters |
| 4 | Kozilek, the Great Distortion | Aleksi Briclot | | M | Oath of the Gatewatch |
| 452 | Kozilek, the Great Distortion | Aleksi Briclot | | M | Commander Masters |
| 668 | Kozilek, the Great Distortion | Grant Griffin | | M | Commander Masters |
| 1057 | Kozilek, the Great Distortion | Grant Griffin | | M | Commander Masters |
| 10 | Kozilek's Channeler | Jason Felix | | C | Battle for Zendikar |
| 11 | Kozilek's Command | Yeong-Hao Han | | R | Modern Horizons 3 |
| 5 | Kozilek's Pathfinder | James Zapata | | C | Oath of the Gatewatch |
| 147 | Kozilek's Predator | Steve Argyle | Green | C | Modern Masters 2015 Edition |
| 173 | Kozilek's Predator | Steve Argyle | Green | C | Double Masters |
| 193 | Kozilek's Predator | Steve Argyle | Green | C | Rise of the Eldrazi |
| 301 | Kozilek's Predator | Steve Argyle | Green | C | Commander Masters |
| 98 | Kozilek's Return | Lius Lasahido | Red | M | Oath of the Gatewatch |
| 214 | Kozilek's Return | Lius Lasahido | Red | M | Modern Horizons 3 Commander |
| 129 | Kozilek's Sentinel | Raymond Swanland | Red | C | Battle for Zendikar |
| 73 | Kozilek's Shrieker | Jason Felix | Black | C | Oath of the Gatewatch |
| 74 | Kozilek's Translator | Izzy | Black | C | Oath of the Gatewatch |
| 65 | Kozilek's Unsealing | Raph Lomotan | Blue | U | Modern Horizons 3 |
| 42 | Kraken of the Straits | Richard Wright | Blue | U | Born of the Gods |
| 126 | Kraken's Eye | Alan Pollack | | U | Darksteel |
| 210 | Kraken's Eye | Alan Pollack | | U | Magic 2011 |
| 211 | Kraken's Eye | Alan Pollack | | U | Magic 2012 |
| 213 | Kraken's Eye | Alan Pollack | | U | Magic 2010 |
| 302 | Kraken's Eye | Alan Pollack | | U | Ninth Edition |
| 329 | Kraken's Eye | Alan Pollack | | U | Tenth Edition |
| 185 | Krallenhorde Wantons | Randy Gallegos | Green | C | Innistrad |
| 67 | Kranioceros | Steve Argyle | Red | C | Conflux |
| 189 | Krark, the Thumbless | Mathias Kollros | Red | R | Commander Legends |
| 574 | Krark, the Thumbless | Mathias Kollros | Red | R | Commander Legends |
| 70 | Krark-Clan Engineers | Pete Venters | Red | U | Fifth Dawn |
| 134 | Krark-Clan Ironworks | Tim Hildebrandt | | U | Fifth Dawn |
| 224 | Krark-Clan Ironworks | Tim Hildebrandt | | U | Mystery Booster 2: Convention Edition |
| 98 | Krark-Clan Shaman | Thomas M. Baxa | Red | C | Mirrodin |
| 65 | Krark-Clan Stoker | Pete Venters | Red | C | Darksteel |
| 79 | Krark's Other Thumb | Jeff Miracola | | U | Unsanctioned |
| 151 | Krark's Other Thumb | Jeff Miracola | | U | Unstable |
| 190 | Krark's Thumb | Ron Spencer | | R | Mirrodin |
| 79 | Krasis Incubation | Marco Nelor | Blue/Green | U | Dragon's Maze |
| 135 | Kraul Foragers | Aaron Miller | Green | C | Guilds of Ravnica |
| 682 | Kraul Foragers | Aaron Miller | Green | C | Jumpstart 2022 |
| 165 | Kraul Stinger | Randy Vargas | Green | C | War of the Spark |
| 73 | Kraul Swarm | Jehan Choo | Black | U | Guilds of Ravnica |
| 432 | Kraul Swarm | Jehan Choo | Black | U | Jumpstart 2022 |
| 34 | Kraum, Ludevic's Opus | Aaron Miller | Blue/Red | R | Commander 2016 |
| 523 | Kraum, Ludevic's Opus | Aaron Miller | Blue/Red | M | Commander Legends |
| 135 | Krenko, Baron of Tin Street | Brian Valeza | Red | R | Murders at Karlov Manor |
| 350 | Krenko, Baron of Tin Street | Marko Manev | Red | R | Murders at Karlov Manor |
| 15 | Krenko, Mob Boss | Karl Kopinski | Red | R | Duel Decks: Speed vs. Cunning |
| 52 | Krenko, Mob Boss | Karl Kopinski | Red | R | Duel Decks: Merfolk vs. Goblins |
| 114 | Krenko, Mob Boss | Karl Kopinski | Red | R | Ravnica Remastered |
| 138 | Krenko, Mob Boss | Karl Kopinski | Red | R | Magic 2013 |
| 204 | Krenko, Mob Boss | Lie Setiawan | Red | R | Magic: The Gathering Foundations |
| 238 | Krenko, Mob Boss | Karl Kopinski | Red | R | Commander Masters |
| 335 | Krenko, Mob Boss | Karl Kopinski | Red | R | Ravnica Remastered |
| 339 | Krenko, Mob Boss | Karl Kopinski | Red | R | Jumpstart |
| 430 | Krenko, Mob Boss | 七片藍/AI NANAHIRA | Red | R | Ravnica Remastered |
| 543 | Krenko, Mob Boss | Karl Kopinski | Red | R | Commander Masters |
| 564 | Krenko, Mob Boss | Karl Kopinski | Red | R | Jumpstart 2022 |
| 107 | Krenko, Tin Street Kingpin | Mark Behm | Red | R | Kamigawa: Neon Dynasty Commander |
| 124 | Krenko, Tin Street Kingpin | Mark Behm | Red | R | Dominaria United Commander |
| 137 | Krenko, Tin Street Kingpin | Mark Behm | Red | R | War of the Spark |
| 287 | Krenko, Tin Street Kingpin | Viko Menezes | Red | R | March of the Machine Commander |
| 136 | Krenko's Buzzcrusher | Joshua Raphael | Red | R | Murders at Karlov Manor |
| 405 | Krenko's Buzzcrusher | Joshua Raphael | Red | R | Murders at Karlov Manor |
| 25 | Krenko's Command | Karl Kopinski | Red | C | Duel Decks: Speed vs. Cunning |
| 53 | Krenko's Command | Karl Kopinski | Red | C | Duel Decks: Merfolk vs. Goblins |
| 115 | Krenko's Command | Karl Kopinski | Red | C | Ravnica Remastered |
| 128 | Krenko's Command | Karl Kopinski | Red | C | Jumpstart: Historic Horizons |
| 139 | Krenko's Command | Lucas Graciano | Red | C | Ravnica Clue Edition |
| 139 | Krenko's Command | Karl Kopinski | Red | C | Magic 2013 |
| 336 | Krenko's Command | Karl Kopinski | Red | C | Ravnica Remastered |
| 152 | Krenko's Enforcer | Karl Kopinski | Red | C | Magic 2015 Core Set |
| 5 | Kresh the Bloodbraided | Steve Argyle | Black/Red/Green | M | From the Vault: Legends |
| 178 | Kresh the Bloodbraided | Raymond Swanland | Black/Red/Green | M | Shards of Alara |
| 345 | Kresh the Bloodbraided | Raymond Swanland | Black/Red/Green | M | Streets of New Capenna Commander |
| 195 | Kris Mage | Matthew Wilson | Red | C | Mercadian Masques |
| 7 | Kros, Defense Contractor | Katerina Ladon | White/Blue/Green | M | Streets of New Capenna Commander |
| 105 | Kros, Defense Contractor | Katerina Ladon | White/Blue/Green | M | Streets of New Capenna Commander |
| 79 | Krosan Adaptation (playtest) | Zach Francks | Green | C | Mystery Booster |
| 246 | Krosan Archer | Ron Spears | Green | C | Odyssey |
| 247 | Krosan Avenger | D. Alexander Gregory | Green | C | Odyssey |
| 248 | Krosan Beast | Kev Walker | Green | R | Odyssey |
| 82 | Krosan Cloudscraper | Ron Spears | Green | S | Time Spiral "Timeshifted" |
| 130 | Krosan Cloudscraper | Ron Spears | Green | R | Legions |
| 175 | Krosan Cloudscraper | Ron Spears | Green | R | Murders at Karlov Manor Commander |
| 176 | Krosan Colossus | Kev Walker | Green | R | Murders at Karlov Manor Commander |
| 177 | Krosan Colossus | Kev Walker | Green | U | Masters 25 |
| 270 | Krosan Colossus | Kev Walker | Green | R | Onslaught |
| 129 | Krosan Constrictor | Jim Nelson | Green | C | Torment |
| 122 | Krosan Drover | Arnie Swekel | Green | C | Scourge |
| 167 | Krosan Druid | Bastien L. Deharme | Green | C | Dominaria |
| 53 | Krosan Grip | Minttu Hynninen | Green | R | Strixhaven Mystical Archive |
| 123 | Krosan Grip | Zoltan Boros & Gabor Szikszai | Green | U | Commander Anthology |
| 152 | Krosan Grip | Zoltan Boros & Gabor Szikszai | Green | U | Modern Masters |
| 153 | Krosan Grip | Zoltan Boros & Gabor Szikszai | Green | U | Commander 2013 Edition |
| 181 | Krosan Grip | Zoltan Boros & Gabor Szikszai | Green | U | Ikoria Commander |
| 189 | Krosan Grip | Zoltan Boros & Gabor Szikszai | Green | U | Commander 2015 |
| 198 | Krosan Grip | Zoltan Boros & Gabor Szikszai | Green | U | Commander 2021 |
| 202 | Krosan Grip | Zoltan Boros & Gabor Szikszai | Green | U | Time Spiral |
| 214 | Krosan Grip | Zoltan Boros & Gabor Szikszai | Green | U | Time Spiral Remastered |
| 271 | Krosan Groundshaker | Wayne England | Green | U | Onslaught |
| 122 | Krosan Reclamation | Gary Ruddell | Green | U | Judgment |
| 130 | Krosan Restorer | Clyde Caldwell | Green | C | Torment |
| 168 | Krosan Restorer | Clyde Caldwell | Green | C | Dominaria Remastered |
| 11 | Krosan Tusker | Kev Walker | Green | C | Duel Decks Anthology, Garruk vs. Liliana |
| 11 | Krosan Tusker | Kev Walker | Green | C | Duel Decks: Garruk vs. Liliana |
| 14 | Krosan Tusker | Kev Walker | Green | C | Duel Decks: Elves vs. Inventors |
| 21 | Krosan Tusker | Kev Walker | Green | C | Historic Anthology 3 |
| 59 | Krosan Tusker | Kev Walker | Green | C | Duel Decks: Heroes vs. Monsters |
| 62 | Krosan Tusker | Kev Walker | Green | C | Archenemy |
| 154 | Krosan Tusker | Kev Walker | Green | C | Commander 2013 Edition |
| 164 | Krosan Tusker | Kev Walker | Green | C | Magic: The Gathering-Commander |
| 169 | Krosan Tusker | Kev Walker | Green | C | Modern Horizons |
| 178 | Krosan Tusker | Kev Walker | Green | U | Masters 25 |
| 218 | Krosan Tusker | Kev Walker | Green | C | Vintage Masters |
| 272 | Krosan Tusker | Kev Walker | Green | C | Onslaught |
| 302 | Krosan Tusker | Kev Walker | Green | C | Commander Masters |