5 Obsessive Search (TOR) 43
4 Ocular Halo (DIS) 28
6 Oculus (MBS) 29
1 Ojutai Interceptor (DTK) 66
3 Ojutai's Breath (DTK) 67
1 Ojutai's Summons (DTK) 68
1 Omen (PLIST) 62
18 Omenspeaker (M19) 64
6 Opal Lake Gatekeepers (DGM) 16
2 Ophidian Eye (TSP) 70
6 Opportunity (M14) 66
1 Oppressive Will (SOK) 50
2 Oracle of Dust (BFZ) 63
5 Oracle's Insight (BNG) 47
2 Ordeal of Thassa (THS) 58
10 Outwit (AVR) 70
1 Owl Familiar (J25) 342