Can anybody else confirm this?Couldn't find this anywhere in the search and not sure where to give this information. I verified that defeating Xerneas in the first battle and then saving does not lock it's stats/nature. This lets you more quickly reset to try and get an ideal nature and IV spread. Should work the same with Y.
Thank you. In an internet full of trolls, hopefully I can trust a mod here. ;) That cutscene is killing me. I'm going for perfect 5iv (modest) no excuses...already dumped one that was a mere 1 point off in 1 stat.Yes, I can confirm that what vileguy said is true. That's actually the tactic I used to get my Xerneas!