| OblationCommander 2021 · 97 | Commander 2021 | 97 | Rare | €0.49 |
| OblationCommander 2011 · 22 | Commander 2011 | 22 | Rare | €0.17 |
| OblationOnslaught · 46 | Onslaught | 46 | Rare | €0.31 |
| ObliterateEighth Edition · 204 | Eighth Edition | 204 | Rare | €1.29 |
| ObliterateEighth Edition · 204★ | Eighth Edition | 204★ | Rare | $3.82 |
| ObliterateInvasion · 156 | Invasion | 156 | Rare | €1.79 |
| ObliterateThe List Tokens · INV-156 | The List Tokens | INV-156 | Rare | €1.00 |
| ObliterateWorld Championship Decks 2001 Tokens · jt156sb | World Championship Decks 2001 Tokens | jt156sb | Rare | €1.60 |
| Oblivion RingFriday Night Magic 2009 · 11 | Friday Night Magic 2009 | 11 | Rare | €1.18 |
| Oblivion StoneDouble Masters · 279 | Double Masters | 279 | Rare | $0.40 |
| Oblivion StoneThe Brothers' War Commander · 153 | The Brothers' War Commander | 153 | Rare | €0.20 |
| Oblivion StoneCommander Anthology Volume II · 205 | Commander Anthology Volume II | 205 | Rare | $0.39 |
| Oblivion StoneCommander 2011 · 254 | Commander 2011 | 254 | Rare | €0.37 |
| Oblivion StoneIconic Masters · 223 | Iconic Masters | 223 | Rare | €0.37 |
| Oblivion StoneModern Horizons 3 Commander · 303 | Modern Horizons 3 Commander | 303 | Rare | €0.17 |
| Oblivion StoneMirrodin · 222 | Mirrodin | 222 | Rare | €0.61 |
| Oblivion StoneNew Capenna Commander · 373 | New Capenna Commander | 373 | Rare | €0.21 |
| Ob Nixilis of the Black OathCommander Masters · 176 | Commander Masters | 176 | Rare | €0.52 |
| Ob Nixilis of the Black OathCommander Masters · 517 | Commander Masters | 517 | Rare | €4.68 |
| Ob Nixilis, the AscendedReality Fracture Commander · 5 | Reality Fracture Commander | 5 | Rare | €1.10 |
| Ob Nixilis, the AscendedReality Fracture Commander · 90 | Reality Fracture Commander | 90 | Rare | €1.25 |
| Ob Nixilis, UnshackledDouble Masters 2022 · 84 | Double Masters 2022 | 84 | Rare | €1.78 |
| Ob Nixilis, UnshackledDouble Masters 2022 · 442 | Double Masters 2022 | 442 | Rare | €8.94 |
| Ob Nixilis, UnshackledMagic 2015 · 110 | Magic 2015 | 110 | Rare | €1.73 |
| Ob Nixilis, UnshackledMagic 2015 Promos · 110p | Magic 2015 Promos | 110p | Rare | €1.62 |
| Oboro, Palace in the CloudsSaviors of Kamigawa · 164 | Saviors of Kamigawa | 164 | Rare | €17.02 |
| Oboro, Palace in the CloudsThe Zeta Set · 119 | The Zeta Set | 119 | Rare | — |
| Oboro, Palace in the CloudsThe Zeta Set · 240 | The Zeta Set | 240 | Rare | — |
| Oboro, Palace in the CloudsThe Zeta Set · 361 | The Zeta Set | 361 | Rare | — |
| Obosh, the PreypiercerIkoria: Lair of Behemoths · 228 | Ikoria: Lair of Behemoths | 228 | Rare | $0.26 |
| Obosh, the PreypiercerIkoria: Lair of Behemoths · 357 | Ikoria: Lair of Behemoths | 357 | Rare | $0.56 |
| Obosh, the PreypiercerMultiverse Legends · 54 | Multiverse Legends | 54 | Rare | €0.33 |
| Obosh, the PreypiercerMultiverse Legends · 119 | Multiverse Legends | 119 | Rare | €0.51 |
| Obosh, the PreypiercerMultiverse Legends · 184 | Multiverse Legends | 184 | Rare | €4.78 |
| Obosh, the PreypiercerMultiverse Legends · 184z | Multiverse Legends | 184z | Rare | €127.66 |
| Obosh, the PreypiercerIkoria: Lair of Behemoths Promos · 228p | Ikoria: Lair of Behemoths Promos | 228p | Rare | €0.33 |
| Obosh, the PreypiercerIkoria: Lair of Behemoths Promos · 228s | Ikoria: Lair of Behemoths Promos | 228s | Rare | €0.10 |
| Obosh, the PreypiercerMagic Online Promos · 80863 | Magic Online Promos | 80863 | Rare | — |
| Obscura AscendancyStreets of New Capenna Promos · 207p | Streets of New Capenna Promos | 207p | Rare | €0.11 |
| Obscura AscendancyStreets of New Capenna Promos · 207s | Streets of New Capenna Promos | 207s | Rare | $0.22 |
| Obscura AscendancyStreets of New Capenna · 207 | Streets of New Capenna | 207 | Rare | €0.09 |
| Obscura AscendancyStreets of New Capenna · 322 | Streets of New Capenna | 322 | Rare | €0.17 |
| Obscura AscendancyStreets of New Capenna · 387 | Streets of New Capenna | 387 | Rare | €0.02 |
| Obscura ConfluenceNew Capenna Commander · 76 | New Capenna Commander | 76 | Rare | €0.24 |
| Obscura ConfluenceNew Capenna Commander · 176 | New Capenna Commander | 176 | Rare | €0.34 |
| Obscura ConfluenceNew Capenna Commander Promos · 76p | New Capenna Commander Promos | 76p | Rare | €0.48 |
| Obscura InterceptorStreets of New Capenna Promos · 209p | Streets of New Capenna Promos | 209p | Rare | €0.13 |
| Obscura InterceptorStreets of New Capenna Promos · 209s | Streets of New Capenna Promos | 209s | Rare | €0.17 |
| Obscura InterceptorStreets of New Capenna · 209 | Streets of New Capenna | 209 | Rare | €0.09 |
| Obscura InterceptorStreets of New Capenna · 324 | Streets of New Capenna | 324 | Rare | €0.18 |