| Oracle of Mul DayaOutlaws of Thunder Junction Commander · 200 | Outlaws of Thunder Junction Commander | 200 | Rare | €2.94 |
| Oracle of Mul DayaZendikar · 172 | Zendikar | 172 | Rare | €2.73 |
| Oracle of Mul DayaMagic Online Promos · 102277 | Magic Online Promos | 102277 | Rare | — |
| Oracle of NectarsShadowmoor · 233 | Shadowmoor | 233 | Rare | €0.45 |
| Oracle of NectarsThe List Tokens · SHM-233 | The List Tokens | SHM-233 | Rare | €0.24 |
| Oracle's AttendantsEighth Edition · 32 | Eighth Edition | 32 | Rare | €0.24 |
| Oracle's AttendantsEighth Edition · 32★ | Eighth Edition | 32★ | Rare | $0.25 |
| Oracle's AttendantsNinth Edition · 30 | Ninth Edition | 30 | Rare | €0.23 |
| Oracle's AttendantsNinth Edition · 30★ | Ninth Edition | 30★ | Rare | $0.23 |
| Oracle's AttendantsNemesis · 16 | Nemesis | 16 | Rare | €0.22 |
| Oracle's VaultAmonkhet · 234 | Amonkhet | 234 | Rare | €0.19 |
| Oracle's VaultNew Capenna Commander · 374 | New Capenna Commander | 374 | Rare | €0.10 |
| Oracle's VaultAmonkhet Promos · 234 | Amonkhet Promos | 234 | Rare | €0.07 |
| Oracle's VaultAmonkhet Promos · 234s | Amonkhet Promos | 234s | Rare | €0.27 |
| Oracle's VaultMagic Online Promos · 64434 | Magic Online Promos | 64434 | Rare | — |
| Orah, Skyclave HierophantZendikar Rising Promos · 233p | Zendikar Rising Promos | 233p | Rare | €0.15 |
| Orah, Skyclave HierophantZendikar Rising Promos · 233s | Zendikar Rising Promos | 233s | Rare | €0.62 |
| Orah, Skyclave HierophantZendikar Rising · 233 | Zendikar Rising | 233 | Rare | €0.15 |
| Orah, Skyclave HierophantZendikar Rising · 369 | Zendikar Rising | 369 | Rare | €0.27 |
| Orah, Skyclave HierophantZendikar Rising · 385 | Zendikar Rising | 385 | Rare | €0.24 |
| Orah, Skyclave HierophantMagic Online Promos · 83726 | Magic Online Promos | 83726 | Rare | — |
| Oran-Rief HydraBattle for Zendikar · 181 | Battle for Zendikar | 181 | Rare | €0.30 |
| Oran-Rief HydraDuel Decks: Nissa vs. Ob Nixilis Tokens · 16 | Duel Decks: Nissa vs. Ob Nixilis Tokens | 16 | Rare | $0.50 |
| Oran-Rief HydraArchenemy: Nicol Bolas · 69 | Archenemy: Nicol Bolas | 69 | Rare | €0.54 |
| Oran-Rief HydraBattle for Zendikar Promos · 181 | Battle for Zendikar Promos | 181 | Rare | €0.78 |
| Oran-Rief HydraBattle for Zendikar Promos · 181s | Battle for Zendikar Promos | 181s | Rare | €0.53 |
| Oran-Rief HydraMagic Online Promos · 58251 | Magic Online Promos | 58251 | Rare | — |
| Oran-Rief OozeFoundations Jumpstart · 693 | Foundations Jumpstart | 693 | Rare | €0.21 |
| Oran-Rief OozeZendikar Rising Promos · 198p | Zendikar Rising Promos | 198p | Rare | €0.23 |
| Oran-Rief OozeZendikar Rising Promos · 198s | Zendikar Rising Promos | 198s | Rare | €0.56 |
| Oran-Rief OozeZendikar Rising · 198 | Zendikar Rising | 198 | Rare | €0.12 |
| Oran-Rief OozeZendikar Rising · 361 | Zendikar Rising | 361 | Rare | €0.42 |
| Oran-Rief OozeMagic Online Promos · 83770 | Magic Online Promos | 83770 | Rare | — |
| Oran-Rief, the VastwoodBloomburrow Commander · 320 | Bloomburrow Commander | 320 | Rare | $0.45 |
| Oran-Rief, the VastwoodCommander 2014 · 305 | Commander 2014 | 305 | Rare | €0.47 |
| Oran-Rief, the VastwoodCommander 2015 · 297 | Commander 2015 | 297 | Rare | $0.67 |
| Oran-Rief, the VastwoodCommander 2020 · 296 | Commander 2020 | 296 | Rare | €0.58 |
| Oran-Rief, the VastwoodCommander 2021 · 307 | Commander 2021 | 307 | Rare | €0.60 |
| Oran-Rief, the VastwoodCommander Anthology · 263 | Commander Anthology | 263 | Rare | €0.59 |
| Oran-Rief, the VastwoodDuel Decks: Elves vs. Inventors · 28 | Duel Decks: Elves vs. Inventors | 28 | Rare | €0.49 |
| Oran-Rief, the VastwoodNeon Dynasty Commander · 173 | Neon Dynasty Commander | 173 | Rare | €0.55 |
| Oran-Rief, the VastwoodZendikar Promos · 221★ | Zendikar Promos | 221★ | Rare | €5.49 |
| Oran-Rief, the VastwoodSecrets of Strixhaven Commander · 391 | Secrets of Strixhaven Commander | 391 | Rare | $0.48 |
| Oran-Rief, the VastwoodZendikar · 221 | Zendikar | 221 | Rare | €1.01 |
| Orator of OjutaiFriday Night Magic 2015 · 9 | Friday Night Magic 2015 | 9 | Rare | €0.11 |
| Orb of DragonkindAdventures in the Forgotten Realms · 157 | Adventures in the Forgotten Realms | 157 | Rare | €1.31 |
| Orb of DragonkindAdventures in the Forgotten Realms · 381 | Adventures in the Forgotten Realms | 381 | Rare | $1.67 |
| Orb of DragonkindAdventures in the Forgotten Realms Promos · 157a | Adventures in the Forgotten Realms Promos | 157a | Rare | €5.21 |
| Orb of DragonkindAdventures in the Forgotten Realms Promos · 157p | Adventures in the Forgotten Realms Promos | 157p | Rare | $1.16 |
| Orb of DragonkindAdventures in the Forgotten Realms Promos · 157s | Adventures in the Forgotten Realms Promos | 157s | Rare | €0.70 |