HOW TO SUMMON OMEGA-OZMA:
First you need to have dagger and eiko learn all of the eidolons.then you need to complete all of the sidequests, then after that you must learn all abilities and spells with all the characters.
After you do those go back to ipsen's castle, in the room where you get the item that lets dagger learn odin's sword(i can't remember it's name)then you'll fight omega-ozma,it is alot stronger than normal ozma.
You'll need to be at least at level 90.when you beat it you'll receive pumice,robe of lords,excalibur2,and a omegastone.
Take the stone to hades(if you have beat him in memoria)he'll tell you to synthesize it with a pumice(plus it'll cost 500,000 gil)and it'll create the ?????? item.
You equipt it to dagger to summon omega-ozma(it does about 50,000 damage and even causes all bad status effects even if they have a block from a certain status effects.
Added by: FinalFantasy MAS.. , ID#2711