| OpportunityBattle Royale Box Set · 47 | Battle Royale Box Set | 47 | Uncommon | $0.30 |
| OpportunityCommander 2013 · 51 | Commander 2013 | 51 | Uncommon | €0.05 |
| OpportunityCommander 2017 · 89 | Commander 2017 | 89 | Uncommon | €0.11 |
| OpportunityFoundations Jumpstart · 338 | Foundations Jumpstart | 338 | Uncommon | €0.19 |
| OpportunityMagic 2014 · 66 | Magic 2014 | 66 | Uncommon | €0.04 |
| OpportunityModern Masters 2017 · 45 | Modern Masters 2017 | 45 | Uncommon | €0.09 |
| OpportunityThe List Tokens · ULG-37 | The List Tokens | ULG-37 | Uncommon | €0.02 |
| OpportunityThe List Tokens · C17-89 | The List Tokens | C17-89 | Uncommon | €0.09 |
| OpportunityUrza's Legacy · 37 | Urza's Legacy | 37 | Uncommon | $0.16 |
| OptStrixhaven Mystical Archive · 19 | Strixhaven Mystical Archive | 19 | Uncommon | €0.31 |
| OptStrixhaven Mystical Archive · 82 | Strixhaven Mystical Archive | 82 | Uncommon | €2.66 |
| Optical OptimizerUnstable · 197 | Unstable | 197 | Uncommon | €0.08 |
| Optimistic ScavengerDuskmourn: House of Horror · 21 | Duskmourn: House of Horror | 21 | Uncommon | €0.18 |
| Optimistic ScavengerDuskmourn: House of Horror · 288 | Duskmourn: House of Horror | 288 | Uncommon | €0.23 |
| Opulent ClomperAlchemy: Lorwyn Eclipsed · 15 | Alchemy: Lorwyn Eclipsed | 15 | Uncommon | — |
| Opulent PalaceCommander 2016 · 313 | Commander 2016 | 313 | Uncommon | $0.30 |
| Opulent PalaceCommander 2017 · 267 | Commander 2017 | 267 | Uncommon | €0.30 |
| Opulent PalaceCommander 2019 · 264 | Commander 2019 | 264 | Uncommon | €0.22 |
| Opulent PalaceCommander 2020 · 295 | Commander 2020 | 295 | Uncommon | €0.30 |
| Opulent PalaceCommander Anthology Volume II · 260 | Commander Anthology Volume II | 260 | Uncommon | €0.28 |
| Opulent PalaceCommander Masters · 1017 | Commander Masters | 1017 | Uncommon | $0.40 |
| Opulent PalaceDominaria United Commander · 223 | Dominaria United Commander | 223 | Uncommon | €0.17 |
| Opulent PalaceLorwyn Eclipsed Commander · 157 | Lorwyn Eclipsed Commander | 157 | Uncommon | €0.20 |
| Opulent PalaceKhans of Tarkir · 238 | Khans of Tarkir | 238 | Uncommon | €0.26 |
| Opulent PalaceOutlaws of Thunder Junction Commander · 307 | Outlaws of Thunder Junction Commander | 307 | Uncommon | €0.37 |
| Opulent PalaceFallout · 278 | Fallout | 278 | Uncommon | €0.35 |
| Opulent PalaceFallout · 806 | Fallout | 806 | Uncommon | €12.58 |
| Opulent PalaceTarkir: Dragonstorm · 264 | Tarkir: Dragonstorm | 264 | Uncommon | €0.22 |
| Opulent PalaceThe List Tokens · KTK-238 | The List Tokens | KTK-238 | Uncommon | $0.25 |
| Opulent PalaceThe List Tokens · OTC-307 | The List Tokens | OTC-307 | Uncommon | $0.31 |
| Oracle of the AlphaMystery Booster 2 Tokens · 259 | Mystery Booster 2 Tokens | 259 | Uncommon | €144.27 |
| Oracle of TragedyMarch of the Machine · 71 | March of the Machine | 71 | Uncommon | €0.12 |
| Oracle's InsightBattlebond · 127 | Battlebond | 127 | Uncommon | €0.09 |
| Oracle's InsightBorn of the Gods · 47 | Born of the Gods | 47 | Uncommon | €0.11 |
| Orator of OjutaiCommander 2017 · 67 | Commander 2017 | 67 | Uncommon | €0.18 |
| Orator of OjutaiDragons of Tarkir · 28 | Dragons of Tarkir | 28 | Uncommon | €0.08 |
| Orator of OjutaiMagic Online Promos · 57578 | Magic Online Promos | 57578 | Uncommon | — |
| Orbweaver KumoChampions of Kamigawa · 231 | Champions of Kamigawa | 231 | Uncommon | $0.08 |
| Orc GeneralThe Dark · 73 | The Dark | 73 | Uncommon | $1.14 |
| Orc GeneralMasters Edition II · 137 | Masters Edition II | 137 | Uncommon | — |
| Orchard WardenMorningtide · 131 | Morningtide | 131 | Uncommon | €0.28 |
| Orcish ArtilleryUnlimited Edition · 166 | Unlimited Edition | 166 | Uncommon | €2.30 |
| Orcish ArtilleryRevised Edition · 168 | Revised Edition | 168 | Uncommon | $0.25 |
| Orcish Artillery30th Anniversary Edition · 161 | 30th Anniversary Edition | 161 | Uncommon | €0.42 |
| Orcish Artillery30th Anniversary Edition · 458 | 30th Anniversary Edition | 458 | Uncommon | €50.00 |
| Orcish ArtilleryFourth Edition Foreign Black Border · 214 | Fourth Edition Foreign Black Border | 214 | Uncommon | €0.89 |
| Orcish ArtilleryTenth Edition · 220 | Tenth Edition | 220 | Uncommon | €0.14 |
| Orcish ArtilleryFourth Edition · 214 | Fourth Edition | 214 | Uncommon | €0.06 |
| Orcish ArtilleryClassic Sixth Edition · 196 | Classic Sixth Edition | 196 | Uncommon | €0.23 |
| Orcish ArtilleryFifth Edition · 253 | Fifth Edition | 253 | Uncommon | $0.16 |