you need to get the cloudy mirror by racing the chocobos at the Remien Temple, then goto Macalania Forest and help the couple find their kid. Then, take the mirror to where you found the kid (should be a shimmering path that leads up into the trees that you couldn't get up before) and there will be a big bubble/flower looking thing that kinda opens up as you walk towards it. Just talk to it and it will ask you if you have any weapons to power-up. Select Yuna, and it will ask for the moon crest. Do it again and it will ask for the moon sigil, and will power your Nirvana all the way up. Same goes when you get everyone elses celestrial weapons/crests/sigils. <img src="/images/graemlins/smile.gif" alt="" />
