O Forbidden Evil-eye, Open (V.2 - Promo) - D-Promos (Promo) [D-PR-724]

O'aka, Traveling Merchant - Commander: Magic: The Gathering - FINAL FANTASY: Collector's Edition (Rare) [CFIC-39]

O'aka, Traveling Merchant - Commander: Magic: The Gathering - FINAL FANTASY: Extras (Rare) [XFIC-144]

O-Kagachi, Vengeful Kami - Mystery Booster 2 (Mythic) [MB2-138]

O-Nami (OP05-062) (V.1) - Unnumbered Promos (Uncommon) [UP-OP05-062]

O-Nami (OP06-101) (V.1) - Unnumbered Promos (Rare) [UP-OP06-101]

O-Nami (OP06-101) (V.1) - Wings of the Captain (Rare) [OP06-101]

O-Nami (ST18-002) (V.1) - The Best Vol.2 (Common) [PRB02-ST18-002]

O-Nami (ST18-002) (V.2) - The Best Vol.2 (Common) [PRB02-ST18-002]

Oakhame Adversary - Mystery Booster 2: Reprints from Across Magic's History (Uncommon)

Oars (OP06-083) - Promos: Wings of the Captain (Uncommon) [OP06P-083]

Oars (OP15-080) - Adventure on Kami’s Island (Rare) [OP15-080]

Oath of Nissa - Mystery Booster 2: Reprints from Across Magic's History (Rare)

Oath's Power Trunks - Colossal Warfare (Rare) [BT4-032]

Oath's Power, Tapion - Colossal Warfare (Uncommon) [BT4-039]

Oathless Knight (Evolved)

Oathsworn Giant - Mystery Booster 2: Reprints from Across Magic's History (Uncommon)

Obedience Schooled - 2014 Mega-Tins Mega-Pack (Super Rare) [MP14-242]

Obligator Dragon (V.1 - Double Rare) - Illusionless Strife (Double Rare) [DZ-BT02-032]

Obligator Dragon (V.2 - Frame Rare) - Illusionless Strife (Frame Rare) [DZ-BT02-FR26]

Obligator Dragon (V.3 - Silver Rare) - Illusionless Strife (Silver Rare) [DZ-BT02-SR26]

Obliterate Dragon (V.1 - Double Rare) - Envoys of the Crimson Moon (Double Rare) [DZ-BT14-023]

Obliterate Dragon (V.3 - Silver Rare) - Envoys of the Crimson Moon (Silver Rare) [DZ-BT14-SR06]