2 Oblivion Crown (FUT) 73
2 Oblivion Strike (OGW) 75
1 Odunos River Trawler (BNG) 79
10 Ogre Jailbreaker (RTR) 72
3 Okiba-Gang Shinobi (BOK) 76
1 Olivia's Bloodsworn (SOI) 127
1 Onyx Mage (M12) 103
6 Ordeal of Erebos (THS) 99
1 Order of Yawgmoth (UZ) 144
1 Organ Grinder (TOR) 75
4 Orzhov Euthanist (GPT) 54
4 Ostiary Thrull (GPT) 55
1 Ostracize (7E) 153
4 Overeager Apprentice (OD) 154