Ob Nixilis, the Fallen
Ob Nixilis, Unshackled
Obelisk of Urd
Oblivion Sower (Prerelease Foil)
Oboro, Palace in the Clouds
Obstinate Baloth
Olivia Voldaren
Olivia, Mobilized for War
Omnath, Locus of Mana
Omniscience
Oona's Prowler
Opposition
Oracle of Mul Daya
Order of Whiteclay
Orzhov Pontiff
Overburden
Overgrown Tomb
Pact of Negation