| Name | Cost | Price |
|---|---|---|
| Othelm, Sigardian Outcast | $11.50 | |
| Otherworld Atlas | $1.39 | |
| Otherworldly Escort | $0.21 | |
| Otherworldly Gaze | $0.36 | |
| Otherworldly Journey | $0.16 | |
| Otherworldly Outburst | $0.17 | |
| Otterball Antics | $0.32 | |
| Otter-Penguin | $0.11 | |
| Oubliette | $33.13 | |
| Ouroboroid | $31.38 | |
| Oust | $0.25 | |
| Outcaster Trailblazer | $1.18 | |
| Outland Boar | $0.15 | |
| Outland Colossus | $0.14 | |
| Outlaw Medic | $0.18 | |
| Outlaws' Merriment | $2.18 | |
| Outmaneuver | $0.29 | |
| Outmuscle | $0.09 | |
| Outnumber | $0.17 | |
| Out of the Way | $0.14 | |
| Out of Time | $0.26 | |
| Outpost Siege | $0.35 | |
| Outwit | $0.06 | |
| Ovalchase Dragster | $0.25 |