13 Forest (MSH) 286
4 Island (MSH) 289
3 Oasis Gardener (OTJ) 246
1 Observed Stasis (FIC) 40
1 Ochran Assassin (GRN) 194
2 Omen of the Dead (THB) 110
2 Omen of the Hunt (THB) 192
1 Ominous Seas (IKO) 61
1 Ondu Giant (ROE) 202
3 Opaline Unicorn (THS) 218
3 Open into Wonder (AKH) 64
1 Open the Graves (M19) 112
2 Oracle of Tragedy (MOM) 71
2 Orazca Relic (RIX) 181
1 Orcus, Prince of Undeath (AFR) 229
3 Origin of Metalbending (TLA) 187
4 Ornamental Courage (KLD) 164
1 Ouroboroid (EOE) 201
1 Outland Colossus (ORI) 193
1 Overflowing Basin (SOC) 392
4 Overgrowth (10E) 283
1 Overrun (FDN) 230
1 Overseer of the Damned (MKC) 132
4 Swamp (MSH) 291