| 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 |
| 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 |
| 188 | Oketra's Monument | Christine Choi | | U | Dominaria United Commander |
| 233 | Oketra's Monument | Christine Choi | | U | Amonkhet |
| 277 | Oketra's Monument | Christine Choi | | U | Amonkhet Remastered |
| 117 | Okiba Reckoner Raid | Victor Adame Minguez | Black | C | Kamigawa: Neon Dynasty |
| 118 | Okiba Salvage | Lie Setiawan | Black | U | Kamigawa: Neon Dynasty |
| 35 | Okiba-Gang Shinobi | Mark Zug | Black | C | Planechase Anthology |
| 35 | Okiba-Gang Shinobi | Mark Zug | Black | C | Planechase 2012 Edition |
| 76 | Okiba-Gang Shinobi | Mark Zug | Black | C | Betrayers of Kamigawa |
| 111 | Okiba-Gang Shinobi | Mark Zug | Black | C | Jumpstart: Historic Horizons |
| 140 | Okina Nightwatch | Heather Hudson | Green | C | Saviors of Kamigawa |
| 280 | Okina, Temple to the Grandfathers | Keith Garletts | | R | Champions of Kamigawa |
| 204 | Okk | Peter Bollinger | Red | R | Seventh Edition |
| 204 | Okk | Mike Raabe | Red | R | Urza's Saga |
| 206 | Okk | Peter Bollinger | Red | R | Eighth Edition |
| 223 | Oko, the Ringleader | Magali Villeneuve | Blue/Green | M | Outlaws of Thunder Junction |
| 296 | Oko, the Ringleader | Dibujante Nocturno | Blue/Green | M | Outlaws of Thunder Junction |
| 305 | Oko, the Ringleader | Lie Setiawan | Blue/Green | M | Outlaws of Thunder Junction |
| 309 | Oko, the Trickster | Chris Rallis | Blue/Green | M | Throne of Eldraine |
| 50 | Oko, Thief of Crowns | Michael Walsh | Blue/Green | M | Outlaws of Thunder Junction Breaking News |
| 77 | Oko, Thief of Crowns | Michael Walsh | Blue/Green | M | Outlaws of Thunder Junction Breaking News |
| 197 | Oko, Thief of Crowns | Yongjae Choi | Blue/Green | M | Throne of Eldraine |
| 310 | Oko's Accomplices | Zezhou Chen | Blue | C | Throne of Eldraine |
| 312 | Oko's Hospitality | Deruchenko Alexander | Blue/Green | R | Throne of Eldraine |
| 134 | Ol' Buzzbark | Wayne Reynolds | Red/Green | M | Unstable |
| 233 | Olag, Ludevic's Hubris | Ryan Pancoast | Blue/Black | R | Innistrad: Midnight Hunt |
| 320 | Olag, Ludevic's Hubris | Milivoj Ćeran | Blue/Black | R | Innistrad: Midnight Hunt |
| 316 | Old Flitterfang | Chris Seaman | Black | U | Wilds of Eldraine |
| 67 | Old Fogey | Douglas Shuler | Green | R | Unsanctioned |
| 106 | Old Fogey | Douglas Schuler | Green | R | Unhinged |
| 232 | Old Ghastbark | Thomas M. Baxa | White/Green | C | Shadowmoor |
| 197 | Old Gnawbone | Filip Burburan | Green | M | Adventures in the Forgotten Realms |
| 296 | Old Gnawbone | Randy Vargas | Green | M | Adventures in the Forgotten Realms |
| 11 | Old Guard | David Sladek | White | C | Unsanctioned |
| 16 | Old Guard | David Sladek | White | C | Unstable |
| Old Man of the Sea | Susan Van Camp | Blue | R | Arabian Nights |
| 45 | Old Man of the Sea | Susan Van Camp | Blue | R | Masters Edition III |
| 217 | Old Man Willow | Miklós Ligeti | Black/Green | U | The Lord of the Rings: Tales of Middle Earth |
| 668 | Old Man Willow | Miklós Ligeti | Black/Green | U | The Lord of the Rings: Tales of Middle Earth |
| 96 | Old One Eye | Mathias Kollros | Green | R | Warhammer 40,000 Commander |
| 244 | Old Rutstein | Greg Staples | Black/Green | R | Innistrad: Crimson Vow |
| 326 | Old Rutstein | Mark Riddick | Black/Green | R | Innistrad: Crimson Vow |
| 227 | Old Stickfingers | Jehan Choo | Black/Green | R | Duskmourn: House of Horror Commander |
| 234 | Old Stickfingers | Jehan Choo | Black/Green | R | Innistrad: Midnight Hunt |
| 321 | Old Stickfingers | DZO | Black/Green | R | Innistrad: Midnight Hunt |
| 62 | Old-Fashioned Vampire | Simon Dominic | Black | U | Unstable |
| 199 | Old-Growth Dryads | Yongjae Choi | Green | R | Ixalan |
| 256 | Old-Growth Grove | Raoul Vitale | | U | Modern Horizons 3 |
| 185 | Old-Growth Troll | Jesper Ejsing | Green | R | Kaldheim |
| 365 | Old-Growth Troll | Jesper Ejsing | Green | R | Kaldheim |
| 139 | Oliphaunt | John Di Giovanni | Red | C | The Lord of the Rings: Tales of Middle Earth |
| 426 | Oliphaunt | Tyler Jacobson | Red | C | The Lord of the Rings: Tales of Middle Earth |
| 590 | Oliphaunt | John Di Giovanni | Red | C | The Lord of the Rings: Tales of Middle Earth |
| 177 | Olivia Voldaren | Eric Deschamps | Black/Red | M | Modern Masters 2017 Edition |
| 215 | Olivia Voldaren | Eric Deschamps | Black/Red | M | Innistrad |
| 245 | Olivia, Crimson Bride | Anna Steinbauer | Black/Red | M | Innistrad: Crimson Vow |
| 315 | Olivia, Crimson Bride | Xiaobotong | Black/Red | M | Innistrad: Crimson Vow |
| 343 | Olivia, Crimson Bride | Bastien L. Deharme | Black/Red | M | Innistrad: Crimson Vow |
| 239 | Olivia, Mobilized for War | Eric Deschamps | Black/Red | M | Shadows Over Innistrad Remastered |
| 248 | Olivia, Mobilized for War | Eric Deschamps | Black/Red | M | Shadows over Innistrad |
| 2 | Olivia, Opulent Outlaw | Anna Steinbauer | White/Black/Red | M | Outlaws of Thunder Junction Commander |
| 172 | Olivia's Attendants | Dmitry Burmak | Red | R | Innistrad: Crimson Vow |
| 307 | Olivia's Attendants | Christian Angel | Red | R | Innistrad: Crimson Vow |
| 127 | Olivia's Bloodsworn | Daarken | Black | U | Shadows Over Innistrad Remastered |
| 127 | Olivia's Bloodsworn | Daarken | Black | U | Shadows over Innistrad |
| 100 | Olivia's Dragoon | Chris Rallis | Black | C | Eldritch Moon |
| 109 | Olivia's Dragoon | Chris Rallis | Black | C | Ultimate Masters |
| 128 | Olivia's Dragoon | Chris Rallis | Black | C | Shadows Over Innistrad Remastered |
| 118 | Olivia's Midnight Ambush | Chris Rallis | Black | C | Innistrad: Midnight Hunt |
| 20 | Olivia's Wrath | Nestor Ossandon Leal | Black | R | Innistrad: Crimson Vow Commander |
| 58 | Olivia's Wrath | Nestor Ossandon Leal | Black | R | Innistrad: Crimson Vow Commander |
| 205 | Olivia's Wrath | Néstor Ossandón Leal | Black | R | The Lost Caverns of Ixalan Commander |
| 27 | Ollenbock Escort | Eric Wilkerson | White | U | Innistrad: Crimson Vow |
| 140 | Olog-hai Crusher | Andrea Piparo | Red | C | The Lord of the Rings: Tales of Middle Earth |
| 591 | Olog-hai Crusher | Andrea Piparo | Red | C | The Lord of the Rings: Tales of Middle Earth |
| 503 | Olórin's Searing Light | Matt Stewart | White/Red | R | The Lord of the Rings: Tales of Middle Earth Commander |
| 203 | Oloro, Ageless Ascetic | Eric Deschamps | White/Blue/Black | M | Commander 2013 Edition |
| 27 | Oltec Archaeologists | Winona Nelson | White | C | The Lost Caverns of Ixalan |
| 28 | Oltec Cloud Guard | Evyn Fong | White | C | The Lost Caverns of Ixalan |
| 3 | Oltec Matterweaver | Villarrte | White | M | Outlaws of Thunder Junction: The Big Score |
| 33 | Oltec Matterweaver | Inkognit | White | M | Outlaws of Thunder Junction: The Big Score |
| 68 | Oltec Matterweaver | Villarrte | White | M | Outlaws of Thunder Junction: The Big Score |
| 708 | Omarthis, Ghostfire Initiate | Brent Hollowell | | M | Commander Masters |
| 748 | Omarthis, Ghostfire Initiate | Brent Hollowell | | M | Commander Masters |
| 223 | Omega Myr | Dany Orizio | | C | Mirrodin |
| Omen | Eric Peterson | Blue | C | Portal |
| 70 | Omen Hawker | Josh Hass | Blue | U | March of the Machine |
| 148 | Omen Machine | David Rapoza | | R | New Phyrexia |
| Omen of Fire | Pete Venters | Red | R | Alliances |
| 110 | Omen of the Dead | Piotr Dura | Black | C | Theros Beyond Death |
| 145 | Omen of the Forge | Piotr Dura | Red | C | Theros Beyond Death |
| 192 | Omen of the Hunt | Piotr Dura | Green | C | Theros Beyond Death |
| 906 | Omen of the Hunt | Piotr Dura | Green | C | Commander Masters |
| 58 | Omen of the Sea | Piotr Dura | Blue | C | Theros Beyond Death |
| 30 | Omen of the Sun | Piotr Dura | White | C | Theros Beyond Death |
| 831 | Omen of the Sun | Piotr Dura | White | C | Commander Masters |
| 18 | Omenpath Journey | Nereida | Green | M | Outlaws of Thunder Junction: The Big Score |
| 48 | Omenpath Journey | Raymond Swanland | Green | M | Outlaws of Thunder Junction: The Big Score |
| 83 | Omenpath Journey | Nereida | Green | M | Outlaws of Thunder Junction: The Big Score |
| 21 | Omenport Vigilante | Forrest Imel | White | U | Outlaws of Thunder Junction |
| 39 | Omenspeaker | Dallas Williams | Blue | C | Duel Decks: Elspeth vs. Kiora |
| 57 | Omenspeaker | Dallas Williams | Blue | C | Theros |
| 64 | Omenspeaker | Dallas Williams | Blue | C | Core Set 2019 |
| 83 | Omenspeaker | Dallas Williams | Blue | C | Commander Legends |
| 118 | Omenspeaker | Dallas Williams | Blue | C | Conspiracy: Take the Crown |
| 125 | Omenspeaker | Dallas Williams | Blue | C | Battlebond |
| 189 | Ominous Cemetery | Anato Finnstark | | U | Doctor Who Commander |
| 241 | Ominous Parcel | Joe Slucher | | C | Streets of New Capenna |
| 65 | Ominous Roost | Josu Hernaiz | Blue | U | Innistrad: Midnight Hunt |
| 61 | Ominous Seas | Vincent Proce | Blue | U | Ikoria: Lair of Behemoths |