What are the sidequest I can do before Mt. Bur-Omisace?
Before Mt. Bur-Omisace you should be able to:
Complete ~15 mark hunts (from task board in Sandsea as well as from Montblanc in the Clan Hall in Rabanastre)
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Obtain 4 optional espers:
- Adrammelech (Zertinan Caverns/Athroza Quicksands)
- Zalera (Barheim Passage/Terminus No. 7)
- Cuchulainn (Garamsythe Waterway/No. 1 Cloaca)
- Exodus (Mosphoran Highwaste/Empyrean Seat)
Obtain the Zodiac Spear from the Necrohol of Nabudis (assuming you did not open any of the chests that prevent the spear from spawning)