| Oviya, Automech ArtisanAetherdrift Promos · 173p | Aetherdrift Promos | 173p | Rare | €0.51 |
| Oviya, Automech ArtisanAetherdrift Promos · 173s | Aetherdrift Promos | 173s | Rare | $1.91 |
| Oviya Pashiri, Sage LifecrafterCommander Masters · 311 | Commander Masters | 311 | Uncommon | €0.13 |
| Oviya Pashiri, Sage LifecrafterKaladesh · 165 | Kaladesh | 165 | Rare | €0.13 |
| Oviya Pashiri, Sage LifecrafterKaladesh Promos · 165s | Kaladesh Promos | 165s | Rare | €1.10 |
| Oviya Pashiri, Sage LifecrafterKaladesh Remastered · 174 | Kaladesh Remastered | 174 | Rare | — |
| OwUnglued · 36 | Unglued | 36 | Rare | $0.73 |
| Owen Grady, Raptor TrainerJurassic World Collection · 16 | Jurassic World Collection | 16 | Rare | €4.42 |
| Owen Grady, Raptor TrainerJurassic World Collection · 41 | Jurassic World Collection | 41 | Rare | €234.14 |
| OwlbearAdventures in the Forgotten Realms · 198 | Adventures in the Forgotten Realms | 198 | Common | €0.11 |
| OwlbearAdventures in the Forgotten Realms · 331 | Adventures in the Forgotten Realms | 331 | Common | €0.04 |
| OwlbearAlchemy Horizons: Baldur's Gate · 218 | Alchemy Horizons: Baldur's Gate | 218 | Common | — |
| Owlbear CubCommander Legends: Battle for Baldur's Gate · 246 | Commander Legends: Battle for Baldur's Gate | 246 | Rare | €0.88 |
| Owlbear CubCommander Legends: Battle for Baldur's Gate · 592 | Commander Legends: Battle for Baldur's Gate | 592 | Rare | €1.89 |
| Owlbear CubBattle for Baldur's Gate Promos · 246s | Battle for Baldur's Gate Promos | 246s | Rare | €0.75 |
| Owlbear // OwlbearAdventures in the Forgotten Realms Art Series · 15 | Adventures in the Forgotten Realms Art Series | 15 | — | — |
| Owlbear // OwlbearAdventures in the Forgotten Realms Art Series · 76 | Adventures in the Forgotten Realms Art Series | 76 | — | — |
| Owlbear ShepherdCommander Legends: Battle for Baldur's Gate · 247 | Commander Legends: Battle for Baldur's Gate | 247 | Uncommon | €0.15 |
| Owlbear ShepherdAlchemy Horizons: Baldur's Gate · 219 | Alchemy Horizons: Baldur's Gate | 219 | Uncommon | — |
| Owlbear Shepherd // Owlbear ShepherdBattle for Baldur's Gate Art Series · 35 | Battle for Baldur's Gate Art Series | 35 | — | — |
| Owl FamiliarRavnica: Clue Edition · 90 | Ravnica: Clue Edition | 90 | Common | $0.15 |
| Owl FamiliarFoundations Jumpstart · 342 | Foundations Jumpstart | 342 | Common | €0.10 |
| Owl FamiliarPortal · 63 | Portal | 63 | Common | $0.40 |
| Owl FamiliarThe List Tokens · POR-63 | The List Tokens | POR-63 | Common | €0.08 |
| Owl FamiliarStarter 1999 · 43 | Starter 1999 | 43 | Uncommon | €0.76 |
| Owl FamiliarMasters Edition IV · 54 | Masters Edition IV | 54 | Common | — |
| Owl FamiliarVintage Masters · 85 | Vintage Masters | 85 | Common | — |
| Owlin HistorianSecrets of Strixhaven · 24 | Secrets of Strixhaven | 24 | Common | €0.03 |
| Owlin ShieldmageStrixhaven: School of Mages · 210 | Strixhaven: School of Mages | 210 | Common | €0.06 |
| Owlin SpiralmancerSecrets of Strixhaven Commander · 22 | Secrets of Strixhaven Commander | 22 | Rare | $0.33 |
| Owlin SpiralmancerSecrets of Strixhaven Commander · 72 | Secrets of Strixhaven Commander | 72 | Rare | €0.36 |
| OxCommander Legends: Battle for Baldur's Gate Tokens · 13 | Commander Legends: Battle for Baldur's Gate Tokens | 13 | — | $0.36 |
| OxCommander Masters Tokens · 65 | Commander Masters Tokens | 65 | — | — |
| OxCore Set 2019 Tokens · 5 | Core Set 2019 Tokens | 5 | — | $0.46 |
| OxMarvel Super Heroes Commander Tokens · 7 | Marvel Super Heroes Commander Tokens | 7 | — | — |
| OxOutlaws of Thunder Junction Tokens · 3 | Outlaws of Thunder Junction Tokens | 3 | — | $0.21 |
| OxThe List Tokens · TOTJ-3 | The List Tokens | TOTJ-3 | — | €0.22 |
| OxMarvel Super Heroes Commander Tokens · 23 | Marvel Super Heroes Commander Tokens | 23 | — | — |
| Ox DroverWilds of Eldraine Commander · 6 | Wilds of Eldraine Commander | 6 | Rare | €0.31 |
| Ox DroverWilds of Eldraine Commander · 42 | Wilds of Eldraine Commander | 42 | Rare | €0.15 |
| Oxidda DaredevilScars of Mirrodin · 100 | Scars of Mirrodin | 100 | Common | $0.08 |
| Oxidda FinisherPhyrexia: All Will Be One · 143 | Phyrexia: All Will Be One | 143 | Uncommon | €0.07 |
| Oxidda GolemDuel Decks: Jace vs. Chandra · 46 | Duel Decks: Jace vs. Chandra | 46 | Common | $0.12 |
| Oxidda GolemDarksteel · 135 | Darksteel | 135 | Common | €0.10 |
| Oxidda GolemDuel Decks Anthology: Jace vs. Chandra · 46 | Duel Decks Anthology: Jace vs. Chandra | 46 | Common | €0.19 |
| Oxidda ScrapmelterScars of Mirrodin · 101 | Scars of Mirrodin | 101 | Uncommon | €0.07 |
| Oxidda ScrapmelterArena Anthology 3 · 14 | Arena Anthology 3 | 14 | Uncommon | — |
| OxidizeDarksteel · 79 | Darksteel | 79 | Uncommon | $0.16 |
| OxidizeMagic Player Rewards 2005 · 4 | Magic Player Rewards 2005 | 4 | Rare | €0.40 |
| OxidizeThe List Tokens · P05-4 | The List Tokens | P05-4 | Rare | €0.87 |