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Oath of Nissa - Mystery Booster 2: Reprints from Across Magic's History (Rare) -
Oath of Nissa - Oath of the Gatewatch (Rare) [OGW-140] -
Oath of Scholars - The List (Rare) [ZNL-42] -
Oath of the Grey Host - The Lord of the Rings: Tales of Middle-earth (Uncommon) [LTR-101] -
Oathsworn Knight - Throne of Eldraine (Rare) [ELD-98] -
Ob Nixilis Reignited - Duel Decks: Nissa vs. Ob Nixilis (Mythic) [DDR-36] -
Ob Nixilis's Cruelty - War of the Spark (Common) [WAR-101] -
Ob Nixilis, the Fallen - Commander: Tarkir: Dragonstorm (Mythic) [TDC-192] -
Ob Nixilis, the Hate-Twisted (V.1) - War of the Spark: Japanese Alternate-Art Planeswalkers (Uncommon) [JWAR-100] -
Ob Nixilis, the Hate-Twisted - War of the Spark (Uncommon) [WAR-100] -
Obelisk of Power - Origins (Uncommon) [OGN-284] -
Obelisk of Urd - Magic 2015 (Rare) [M15-222] -
Obelisk Spider - Hour of Devastation (Uncommon) [HOU-141] -
Obliterating Bolt - Magic: The Gathering Foundations: Starter Collection (Uncommon) [SFDN-629] -
Oblivion Sower - Commander: Modern Horizons 3 (Mythic) [M3C-158] -
Oblivion Stone - Commander: Modern Horizons 3 (Rare) [M3C-303] -
Oblivion's Hunger - Zendikar Rising (Common) [ZNR-119] -
Obosh, the Preypiercer - Ikoria: Lair of Behemoths (Rare) [IKO-228] -
Observed Stasis - Commander: Magic: The Gathering - FINAL FANTASY (Rare) [FIC-40] -
Obsessive Pursuit - Magic: The Gathering | Avatar: The Last Airbender (Rare) [TLA-112]