for the synthesis shop thing the list of things u get when u do things. it says get all materials. i cant find this one item. its called lucid stone. where do u get it. if a enemy gives it to u when u kill it then what enemy is it. plz help me and answer my question ive been trying to get the ultima weapon then go beat sephiroth at the hollow bastion(radiant garden) to get the most powerful weapon.