| 189 | Obsessive Stitcher | Joe Slucher | Blue/Black | U | Adventures in the Forgotten Realms Commander |
| 223 | Obsessive Stitcher | Joe Slucher | Blue/Black | U | Core Set 2021 |
| Obsianus Golem | Jesper Myrfors | | U | Starter 2000 |
| Obsianus Golem | Jesper Myrfors | | U | Fourth Edition |
| Obsianus Golem | Jesper Myrfors | | U | Revised Edition |
| Obsianus Golem | Jesper Myrfors | | U | Unlimited Edition |
| Obsianus Golem | Jesper Myrfors | | U | Limited Edition Beta |
| Obsianus Golem | Jesper Myrfors | | U | Limited Edition Alpha |
| 218 | Obsianus Golem | Jesper Myrfors | | C | Masters Edition IV |
| 302 | Obsianus Golem | Jesper Myrfors | | U | Classic Sixth Edition |
| 22 | Obsidian Acolyte | Matthew D. Wilson | White | C | Invasion |
| 144 | Obsidian Battle-Axe | Jeff Easley | | U | Morningtide |
| 137 | Obsidian Charmaw | Lucas Graciano | Red | R | Modern Horizons 2 |
| 353 | Obsidian Charmaw | Lucas Graciano | Red | R | Modern Horizons 2 |
| 55 | Obsidian Fireheart | Raymond Swanland | Red | M | Archenemy: Nicol Bolas |
| 140 | Obsidian Fireheart | Raymond Swanland | Red | M | Zendikar |
| Obsidian Giant | David A. Cherry | Red | U | Portal Second Age |
| 18 | Obsidian Obelisk | Andrew Mar | | R | Dominaria United Commander |
| 94 | Obsidian Obelisk | Andrew Mar | | R | Dominaria United Commander |
| 179 | Obstinate Baloth | Chris Rahn | Green | R | Iconic Masters |
| 187 | Obstinate Baloth | Chris Rahn | Green | U | The Brothers' War |
| 188 | Obstinate Baloth | Chris Rahn | Green | R | Magic 2011 |
| 210 | Obstinate Familiar | Terese Nielsen | Red | R | Odyssey |
| 195 | Obstinate Gargoyle | Craig J Spearing | White/Black | C | Modern Horizons 3 |
| 2 | Obuun, Mul Daya Ancestor | Chris Rallis | White/Red/Green | M | Zendikar Rising Commander |
| 7 | Obuun, Mul Daya Ancestor | Chris Rallis | White/Red/Green | M | Zendikar Rising Commander |
| 210 | Obyra, Dreaming Duelist | Evyn Fong | Blue/Black | U | Wilds of Eldraine |
| 63 | Obyra's Attendants | Andreas Zafiratos | Blue | C | Wilds of Eldraine |
| 176 | Obzedat, Ghost Council | Svetlin Velinov | White/Black | R | Modern Masters 2017 Edition |
| 182 | Obzedat, Ghost Council | Svetlin Velinov | White/Black | M | Gatecrash |
| 89 | Obzedat's Aid | Dan Scott | White/Black | R | Dragon's Maze |
| 14 | Occult Epiphany | Jason Rainville | Blue | R | Innistrad: Crimson Vow Commander |
| 52 | Occult Epiphany | Jason Rainville | Blue | R | Innistrad: Crimson Vow Commander |
| 87 | Oceanus Dragon | Kari Christensen | Blue | C | Commander Legends: Battle for Baldur's Gate |
| 38 | Ocelot Pride | Chris Seaman | White | M | Modern Horizons 3 |
| 322 | Ocelot Pride | Joshua Cairos | White | M | Modern Horizons 3 |
| 394 | Ocelot Pride | Chris Seaman | White | M | Modern Horizons 3 |
| 194 | Ochran Assassin | Anna Steinbauer | Black/Green | U | Guilds of Ravnica |
| 196 | Ochre Jelly | Daarken | Green | R | Adventures in the Forgotten Realms |
| 330 | Ochre Jelly | Diesel | Green | R | Adventures in the Forgotten Realms |
| 29 | Octavia, Living Thesis | Simon Dominic | Blue | R | Commander 2021 |
| 103 | Octavia, Living Thesis | Simon Dominic | Blue | R | Outlaws of Thunder Junction Commander |
| 356 | Octavia, Living Thesis | Simon Dominic | Blue | R | Commander 2021 |
| 54 | Octo Opus | Tomek Larek | Blue | U | Unfinity (Acorn) |
| 37 | Octomancer | Justin Gerard | Blue/Green | R | Bloomburrow Commander |
| 69 | Octomancer | Justin Gerard | Blue/Green | R | Bloomburrow Commander |
| 29 | Octoprophet | Grzegorz Rutkowski | Blue | C | Arena Base Set |
| 70 | Octoprophet | Grzegorz Rutkowski | Blue | C | Core Set 2020 |
| 161 | Octoprophet | Grzegorz Rutkowski | Blue | C | Jumpstart |
| 329 | Octoprophet | Grzegorz Rutkowski | Blue | C | Jumpstart 2022 |
| 11 | Octopus Umbra | Howard Lyon | Blue | R | Commander 2018 |
| 28 | Ocular Halo | Ralph Horsley | Blue | C | Dissension |
| 29 | Oculus | Dan Scott | Blue | C | Mirrodin Besieged |
| 69 | Oculus Whelp | Donato Giancola | Blue | C | March of the Machine |
| 15 | Oddly Uneven | Ben Wootten | White | R | Unstable |
| 551 | Oddric, Lunar Marquis (playtest) | Carol Azevedo | Black | R | Mystery Booster 2: Convention Edition |
| 153 | Odds | Michael Sutfin | Blue/Red | R | Dissension |
| 125 | Odious Trow | Warren Mahy | Black/Green | C | Eventide |
| 127 | Odious Witch | Lie Setiawan | Black | C | Innistrad: Crimson Vow |
| 243 | Odric, Blood-Cursed | Chris Rallis | White/Red | R | Innistrad: Crimson Vow |
| 314 | Odric, Blood-Cursed | Anna Pavleeva | White/Red | R | Innistrad: Crimson Vow |
| 31 | Odric, Lunarch Marshal | Chase Stone | White | R | Shadows over Innistrad |
| 39 | Odric, Lunarch Marshal | Chase Stone | White | R | Shadows Over Innistrad Remastered |
| 95 | Odric, Lunarch Marshal | Chase Stone | White | R | Ikoria Commander |
| 103 | Odric, Lunarch Marshal | Chase Stone | White | R | Dominaria United Commander |
| 379 | Odric, Lunarch Marshal | Chase Stone | White | R | Commander Legends |
| 17 | Odric, Master Tactician | Michael Komarck | White | R | Archenemy: Nicol Bolas |
| 23 | Odric, Master Tactician | Michael Komarck | White | R | Magic 2013 |
| 46 | Odric, Master Tactician | Michael Komarck | White | R | Commander Masters |
| 90 | Odric, Master Tactician | Michael Komarck | White | R | Innistrad: Midnight Hunt Commander |
| 96 | Odric, Master Tactician | Michael Komarck | White | R | Ikoria Commander |
| 468 | Odric, Master Tactician | Michael Komarck | White | R | Commander Masters |
| 29 | Odric's Outrider | Cristi Balanescu | White | U | Innistrad: Midnight Hunt |
| 79 | Odunos River Trawler | Seb McKinnon | Black | U | Born of the Gods |
| Odylic Wraith | Ian Miller | Black | U | Weatherlight |
| 17 | Of Herbs and Stewed Rabbit | Dan Scott | White | R | The Lord of the Rings: Tales of Middle Earth Commander |
| 419 | Of Herbs and Stewed Rabbit | Dan Scott | White | R | The Lord of the Rings: Tales of Middle Earth Commander |
| 60 | Of One Mind | Matt Stewart | Blue | C | Ikoria: Lair of Behemoths |
| 15 | Off Balance | Jeff Miracola | White | C | Nemesis |
| 71 | Offalsnout | Alex Horley-Orlandelli | Black | U | Morningtide |
| 108 | Offalsnout | Lars Grant-West | Black | C | Ultimate Masters |
| 138 | Offender at Large | Mike Bierek | Red | C | Murders at Karlov Manor |
| 102 | Offer Immortality | A. M. Sartor | Black | C | Phyrexia: All Will Be One |
| 525 | Offer Immortality | A. M. Sartor | Black | C | Magic: The Gathering Foundations |
| 9 | Offering to Asha | Daarken | White/Blue | C | Alara Reborn |
| 222 | Officious Interrogation | Borja Pindado | White/Blue | R | Murders at Karlov Manor |
| 314 | Officious Interrogation | Eliz Roxs | White/Blue | R | Murders at Karlov Manor |
| 198 | Offspring's Revenge | Daarken | White/Black/Red | R | Ikoria: Lair of Behemoths |
| 209 | Oggyar Battle-Seer | Karl Kopinski | Blue/Red | C | Strixhaven: School of Mages |
| 20 | Oglor, Devoted Assistant | Michele Giorgi | Blue | M | Innistrad: Midnight Hunt Alchemy |
| 210 | Ognis, the Dragon's Lash | Andreas Zafiratos | Black/Red/Green | R | Streets of New Capenna |
| 325 | Ognis, the Dragon's Lash | Shawn Pagels | Black/Red/Green | R | Streets of New Capenna |
| 390 | Ognis, the Dragon's Lash | Shawn Pagels | Black/Red/Green | R | Streets of New Capenna |
| Ogre Arsonist | Jeffrey R. Busch | Red | U | Portal Second Age |
| 36 | Ogre Battlecaster | Javier Charro | Red | R | Jumpstart 2022 |
| 16 | Ogre Battledriver | Greg Staples | Red | R | Duel Decks: Speed vs. Cunning |
| 80 | Ogre Battledriver | Greg Staples | Red | R | Arena Base Set |
| 148 | Ogre Battledriver | Greg Staples | Red | R | Magic 2014 Core Set |
| Ogre Berserker | David A. Cherry | Red | C | Portal Second Age |
| 319 | Ogre Chitterlord | Piotr Foksowicz | Red | R | Wilds of Eldraine |
| 373 | Ogre Chitterlord | Piotr Foksowicz | Red | R | Wilds of Eldraine |
| Ogre Enforcer | Pete Venters | Red | R | Visions |
| 132 | Ogre Errant | Mitchell Malloy | Red | C | Throne of Eldraine |
| 67 | Ogre Gatecrasher | Daren Bader | Red | C | Dissension |
| 99 | Ogre Geargrabber | David Rapoza | Red | U | Scars of Mirrodin |
| 72 | Ogre Jailbreaker | Karl Kopinski | Black | C | Return to Ravnica |
| 80 | Ogre Jailbreaker | Karl Kopinski | Black | C | Modern Masters 2017 Edition |
| 102 | Ogre Leadfoot | Heather Hudson | Red | C | Mirrodin |
| 75 | Ogre Marauder | Adam Rex | Black | U | Betrayers of Kamigawa |
| 89 | Ogre Menial | David Rapoza | Red | C | New Phyrexia |
| 113 | Ogre Recluse | Jim Murray | Red | U | Betrayers of Kamigawa |
| 72 | Ogre Resister | Efrem Palacios | Red | C | Mirrodin Besieged |
| 9 | Ogre Savant | Parente | Red | C | Duel Decks: Izzet vs. Golgari |
| 55 | Ogre Savant | Parente | Red | C | Duel Decks: Ajani vs. Nicol Bolas |
| 70 | Ogre Savant | Paolo Parente | Red | C | Guildpact |
| 159 | Ogre Sentry | Eric Deschamps | Red | C | Rise of the Eldrazi |
| 168 | Ogre Sentry | Eric Deschamps | Red | C | Conspiracy: Take the Crown |
| 91 | Ogre Shaman | Paolo Parente | Red | R | Exodus |
| 148 | Ogre Shaman | Parente | Red | R | Tempest Remastered |
| 215 | Ogre Siegebreaker | Zoltan Boros | Black/Red | U | Core Set 2020 |
| 50 | Ogre Slumlord | Trevor Claxton | Black | R | Zendikar Rising Commander |
| 71 | Ogre Slumlord | ウナック/WOONAK | Black | R | Jumpstart 2022 |
| 74 | Ogre Slumlord | Trevor Claxton | Black | R | Gatecrash |
| 104 | Ogre Slumlord | Trevor Claxton | Black | R | Adventures in the Forgotten Realms Commander |
| 145 | Ogre Slumlord | Trevor Claxton | Black | R | Outlaws of Thunder Junction Commander |
| 177 | Ogre Slumlord | Trevor Claxton | Black | R | Commander Masters |
| 186 | Ogre Slumlord | Trevor Claxton | Black | R | Bloomburrow Commander |
| 260 | Ogre Slumlord | Trevor Claxton | Black | R | Jumpstart |
| 518 | Ogre Slumlord | Trevor Claxton | Black | R | Commander Masters |
| Ogre Taskmaster | Dan Frazier | Red | U | Portal Second Age |
| 128 | Ogre Taskmaster | Dan Frazier | Red | C | Masters Edition IV |
| 203 | Ogre Taskmaster | Jeff Easley | Red | U | Seventh Edition |
| 205 | Ogre Taskmaster | Dany Orizio | Red | U | Ninth Edition |
| 205 | Ogre Taskmaster | Dany Orizio | Red | U | Eighth Edition |
| 206 | Ogre Taskmaster | Orizio Daniele | Red | U | Mercadian Masques |
| Ogre Warrior | Jeff Miracola | Red | C | Starter 2000 |
| Ogre Warrior | Jeff Miracola | Red | C | Portal Second Age |
| 113 | Ogre Warrior | Jeff Miracola | Red | C | Starter 1999 |
| 155 | Ogre-Head Helm | Viko Menezes | Red | R | Kamigawa: Neon Dynasty |
| 387 | Ogre-Head Helm | ダイエクスト/DAI-XT. | Red | R | Kamigawa: Neon Dynasty |
| 470 | Ogre-Head Helm | Viko Menezes | Red | R | Kamigawa: Neon Dynasty |
| 220 | Ogre's Cleaver | Adi Granov | | U | Rise of the Eldrazi |
| 36 | Ohabi Caleria | Nestor Ossandon Leal | White/Green | R | Dominaria United Commander |
| 33 | Ohran Frostfang | Torstein Nordstrand | Green | R | Commander 2019 |
| 180 | Ohran Frostfang | Torstein Nordstrand | Green | R | Murders at Karlov Manor Commander |
| 199 | Ohran Frostfang | Torstein Nordstrand | Green | R | Outlaws of Thunder Junction Commander |
| 309 | Ohran Frostfang | Torstein Nordstrand | Green | R | Commander Masters |
| 567 | Ohran Frostfang | Torstein Nordstrand | Green | R | Commander Masters |
| 650 | Ohran Frostfang | Ron Spears | Green | R | Commander Masters |
| 57 | Ohran Viper | Kev Walker | Green | R | Duel Decks: Jace vs. Vraska |
| 115 | Ohran Viper | Kev Walker | Green | R | Coldsnap |
| 194 | Ohran Viper | Kev Walker | Green | R | Commander 2015 |
| 93 | Ohran Yeti | Wayne Reynolds | Red | C | Coldsnap |
| 177 | Oil-Gorger Troll | Dave Kendall | Green | C | Phyrexia: All Will Be One |
| 158 | Ojer Axonil, Deepest Might | Victor Adame Minguez | Red | M | The Lost Caverns of Ixalan |
| 317 | Ojer Axonil, Deepest Might | Clint Lockwood | Red | M | The Lost Caverns of Ixalan |
| 204 | Ojer Kaslem, Deepest Growth | Ryan Pancoast | Green | M | The Lost Caverns of Ixalan |
| 318 | Ojer Kaslem, Deepest Growth | Clint Lockwood | Green | M | The Lost Caverns of Ixalan |
| 67 | Ojer Pakpatiq, Deepest Epoch | Chris Rahn | Blue | M | The Lost Caverns of Ixalan |
| 315 | Ojer Pakpatiq, Deepest Epoch | Clint Lockwood | Blue | M | The Lost Caverns of Ixalan |
| 26 | Ojer Taq, Deepest Foundation | Cristi Balanescu | White | M | The Lost Caverns of Ixalan |
| 314 | Ojer Taq, Deepest Foundation | Clint Lockwood | White | M | The Lost Caverns of Ixalan |
| 246 | Oji, the Exquisite Blade | Andreas Zafiratos | White/Blue | U | Alchemy Horizons: Baldur's Gate |
| 284 | Oji, the Exquisite Blade | Pedro Potier | White/Blue | U | Alchemy Horizons: Baldur's Gate |
| 290 | Oji, the Exquisite Blade | Andreas Zafiratos | White/Blue | U | Commander Legends: Battle for Baldur's Gate |
| 436 | Oji, the Exquisite Blade | Pedro Potier | White/Blue | U | Commander Legends: Battle for Baldur's Gate |
| 27 | Ojutai Exemplars | Willian Murai | White | M | Dragons of Tarkir |
| 66 | Ojutai Interceptor | Johann Bodin | Blue | C | Dragons of Tarkir |
| 242 | Ojutai Monument | Daniel Ljunggren | | U | Dragons of Tarkir |
| 156 | Ojutai, Soul of Winter | Chase Stone | White/Blue | R | Fate Reforged |
| 187 | Ojutai, Soul of Winter | Chase Stone | White/Blue | R | Commander 2017 |
| 67 | Ojutai's Breath | Kev Walker | Blue | C | Dragons of Tarkir |
| 68 | Ojutai's Breath | Kev Walker | Blue | C | Iconic Masters |
| 22 | Ojutai's Command | Willian Murai | White/Blue | R | Historic Anthology 5 |
| 227 | Ojutai's Command | Willian Murai | White/Blue | R | Dragons of Tarkir |
| 68 | Ojutai's Summons | Jakub Kasper | Blue | C | Dragons of Tarkir |
| 90 | Ojutai's Summons | Jakub Kasper | Blue | C | Jumpstart: Historic Horizons |
| 227 | O-Kagachi Made Manifest | Kieran Yanner | | M | Kamigawa: Neon Dynasty |
| 362 | O-Kagachi Made Manifest | 霧糺/KIRITADA | | M | Kamigawa: Neon Dynasty |
| 489 | O-Kagachi Made Manifest | Kieran Yanner | | M | Kamigawa: Neon Dynasty |
| 45 | O-Kagachi, Vengeful Kami | Daarken | White/Blue/Black/Red/Green | M | Commander 2017 |
| 138 | O-Kagachi, Vengeful Kami | Daarken | White/Blue/Black/Red/Green | M | Mystery Booster 2: Convention Edition |
| 164 | O-Kagachi, Vengeful Kami | Daarken | White/Blue/Black/Red/Green | M | Dominaria United Commander |
| 6 | Okaun, Eye of Chaos | Yongjae Choi | Red | R | Battlebond |
| 5 | Oketra the True | Bastien L. Deharme | White | S | Masterpiece Series: Amonkhet Invocations |
| 21 | Oketra the True | Chase Stone | White | M | Amonkhet |
| 27 | Oketra the True | Chase Stone | White | M | Amonkhet Remastered |
| 22 | Oketra's Attendant | Lake Hurwitz | White | U | Amonkhet |
| 28 | Oketra's Attendant | Lake Hurwitz | White | U | Amonkhet Remastered |
| 17 | Oketra's Avenger | Anthony Palumbo | White | C | Hour of Devastation |
| 29 | Oketra's Avenger | Anthony Palumbo | White | C | Amonkhet Remastered |
| 18 | Oketra's Last Mercy | Howard Lyon | White | R | Hour of Devastation |