| 140 | Obelisk of Alara | Jeremy Jarvis | | R | Conflux |
| 212 | Obelisk of Bant | David Palumbo | | C | Shards of Alara |
| 113 | Obelisk of Esper | Francis Tsai | | C | Archenemy |
| 213 | Obelisk of Esper | Francis Tsai | | C | Shards of Alara |
| 250 | Obelisk of Esper | Francis Tsai | | C | Commander 2013 Edition |
| 60 | Obelisk of Grixis | Nils Hamm | | C | Duel Decks: Ajani vs. Nicol Bolas |
| 88 | Obelisk of Grixis | Nils Hamm | | C | Archenemy: Nicol Bolas |
| 214 | Obelisk of Grixis | Nils Hamm | | C | Shards of Alara |
| 251 | Obelisk of Grixis | Nils Hamm | | C | Commander 2013 Edition |
| 215 | Obelisk of Jund | Brandon Kitkouski | | C | Shards of Alara |
| 252 | Obelisk of Jund | Brandon Kitkouski | | C | Commander 2013 Edition |
| 216 | Obelisk of Naya | Steve Prescott | | C | Shards of Alara |
| Obelisk of Undoing | Tom Wänerstrand | | R | Fifth Edition |
| Obelisk of Undoing | Tom Wänerstrand | | R | Chronicles |
| Obelisk of Undoing | Tom Wänerstrand | | R | Antiquities |
| 217 | Obelisk of Undoing | Tom Wänerstrand | | R | Masters Edition IV |
| 115 | Obelisk of Urd | John Severin Brassell | | R | Zendikar Rising Commander |
| 222 | Obelisk of Urd | John Severin Brassell | | R | Magic 2015 Core Set |
| 141 | Obelisk Spider | YW Tang | Black/Green | U | Hour of Devastation |
| 249 | Obelisk Spider | YW Tang | Black/Green | U | Amonkhet Remastered |
| 22 | Oblation | Doug Chaffee | White | R | Magic: The Gathering-Commander |
| 46 | Oblation | Doug Chaffee | White | R | Onslaught |
| 71 | Oblation | Doug Chaffee | White | R | Commander 2016 |
| 83 | Oblation | Doug Chaffee | White | R | Commander 2014 |
| 97 | Oblation | Doug Chaffee | White | R | Commander 2021 |
| 11 | Obliterate | Kev Walker | Red | M | From the Vault: Lore |
| 156 | Obliterate | Kev Walker | Red | R | Invasion |
| 204 | Obliterate | Kev Walker | Red | R | Eighth Edition |
| 145 | Obliterating Bolt | Campbell White | Red | U | The Brothers' War |
| 149 | Oblivion | Sidharth Chaturvedi | Black | U | Hour of Devastation |
| 230 | Oblivion | Sidharth Chaturvedi | Black | U | Amonkhet Remastered |
| 73 | Oblivion Crown | Kev Walker | Black | C | Future Sight |
| 3 | Oblivion Ring | Franz Vohwinkel | White | C | Archenemy |
| 4 | Oblivion Ring | Franz Vohwinkel | White | C | Planechase |
| 20 | Oblivion Ring | Franz Vohwinkel | White | C | Shards of Alara |
| 22 | Oblivion Ring | Franz Vohwinkel | White | U | Magic 2013 |
| 23 | Oblivion Ring | Franz Vohwinkel | White | C | Magic: The Gathering-Commander |
| 27 | Oblivion Ring | Franz Vohwinkel | White | U | Magic 2012 |
| 28 | Oblivion Ring | Franz Vohwinkel | White | U | Duel Decks: Venser vs. Koth |
| 29 | Oblivion Ring | Franz Vohwinkel | White | U | Modern Masters 2015 Edition |
| 34 | Oblivion Ring | Chuck Lukacs | White | C | Duel Decks: Knights vs. Dragons |
| 34 | Oblivion Ring | Wayne England | White | C | Lorwyn |
| 11 | Oblivion Sower | Jaime Jones | | M | Battle for Zendikar |
| 41 | Oblivion Sower | Aleksi Briclot | | M | Duel Decks: Zendikar vs. Eldrazi |
| 77 | Oblivion Sower | Jaime Jones | | M | Outlaws of Thunder Junction Commander |
| 158 | Oblivion Sower | Jaime Jones | | M | Modern Horizons 3 Commander |
| 808 | Oblivion Sower | Jaime Jones | | M | Commander Masters |
| 41 | Oblivion Stone | Yeong-Hao Han | | S | Masterpiece Series: Kaladesh Inventions |
| 153 | Oblivion Stone | Gabor Szikszai | | R | The Brothers' War Commander |
| 205 | Oblivion Stone | Sam Wood | | R | Commander Anthology 2018 |
| 222 | Oblivion Stone | Sam Wood | | R | Mirrodin |
| 223 | Oblivion Stone | Gabor Szikszai | | R | Iconic Masters |
| 254 | Oblivion Stone | Sam Wood | | R | Magic: The Gathering-Commander |
| 279 | Oblivion Stone | Gabor Szikszai | | R | Double Masters |
| 303 | Oblivion Stone | Gabor Szikszai | | R | Modern Horizons 3 Commander |
| 373 | Oblivion Stone | Gabor Szikszai | | R | Streets of New Capenna Commander |
| 75 | Oblivion Strike | Daniel Ljunggren | Black | C | Oath of the Gatewatch |
| 119 | Oblivion's Hunger | Izzy | Black | C | Zendikar Rising |
| 225 | Oblivious Bookworm | Josh Newton | Blue/Green | U | Duskmourn: House of Horror |
| 300 | Oblivious Bookworm | Josh Newton | Blue/Green | U | Duskmourn: House of Horror |
| 48 | Oboro Breezecaller | Rebecca Guay | Blue | C | Saviors of Kamigawa |
| 49 | Oboro Envoy | Rob Alexander | Blue | U | Saviors of Kamigawa |
| 164 | Oboro, Palace in the Clouds | Rob Alexander | | R | Saviors of Kamigawa |
| 371 | Oboro, Palace in the Clouds | Jonas De Ro | | M | The Lord of the Rings: Tales of Middle Earth Commander |
| 54 | Obosh, the Preypiercer | Denis Medri | Black/Red | R | March of the Machine Multiverse Legends |
| 228 | Obosh, the Preypiercer | Daarken | Black/Red | R | Ikoria: Lair of Behemoths |
| 207 | Obscura Ascendancy | Igor Krstic | White/Blue/Black | R | Streets of New Capenna |
| 322 | Obscura Ascendancy | Krharts | White/Blue/Black | R | Streets of New Capenna |
| 387 | Obscura Ascendancy | Krharts | White/Blue/Black | R | Streets of New Capenna |
| 208 | Obscura Charm | Steve Argyle | White/Blue/Black | U | Streets of New Capenna |
| 323 | Obscura Charm | Jérémie Solomon | White/Blue/Black | U | Streets of New Capenna |
| 388 | Obscura Charm | Jérémie Solomon | White/Blue/Black | U | Streets of New Capenna |
| 76 | Obscura Confluence | Wisnu Tan | White/Blue/Black | R | Streets of New Capenna Commander |
| 176 | Obscura Confluence | Wisnu Tan | White/Blue/Black | R | Streets of New Capenna Commander |
| 50 | Obscura Initiate | Kim Sokol | Blue | C | Streets of New Capenna |
| 209 | Obscura Interceptor | Jason A. Engle | White/Blue/Black | R | Streets of New Capenna |
| 324 | Obscura Interceptor | Erin Vest | White/Blue/Black | R | Streets of New Capenna |
| 389 | Obscura Interceptor | Erin Vest | White/Blue/Black | R | Streets of New Capenna |
| 24 | Obscura Polymorphist | Darren Tan | White/Blue | R | Streets of New Capenna Alchemy |
| 252 | Obscura Storefront | Muhammad Firdaus | | C | Streets of New Capenna |
| 291 | Obscura Storefront | Muhammad Firdaus | | C | Duskmourn: House of Horror Commander |
| 179 | Obscuring Aether | Min Yum | Green | R | Murders at Karlov Manor Commander |
| 194 | Obscuring Aether | Min Yum | Green | R | Dragons of Tarkir |
| 61 | Obscuring Haze | Campbell White | Green | R | Ikoria Commander |
| 308 | Obscuring Haze | Campbell White | Green | R | Commander Masters |
| 566 | Obscuring Haze | Campbell White | Green | R | Commander Masters |
| 701 | Obscuring Haze | Daren Bader | Green | R | Commander Masters |
| 24 | Observant Alseid | Todd Lockwood | White | C | Theros |
| 152 | Obsessive Astronomer | Josu Hernaiz | Red | U | Innistrad: Midnight Hunt |
| 19 | Obsessive Collector | Reiko Murakami | Blue | R | Innistrad: Midnight Hunt Alchemy |
| 43 | Obsessive Search | Jim Nelson | Blue | C | Torment |
| 61 | Obsessive Search | Jim Nelson | Blue | C | Dominaria Remastered |
| 83 | Obsessive Search | Jim Nelson | Blue | C | Vintage Masters |
| 191 | Obsessive Skinner | John Stanko | Green | U | Duskmourn: House of Horror Commander |
| 207 | Obsessive Skinner | John Stanko | Green | C | Shadows Over Innistrad Remastered |
| 220 | Obsessive Skinner | John Stanko | Green | U | Shadows over Innistrad |
| 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 |
| 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 |
| 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 |