I dont know if this was a dream or real life but I remember seeing a video of a game cutscene from this game. All I remember was a very colorful landscape (I remember there were a lot of flowers and orange seems to come to mind) a lot of dialouge and I think lightning was there but it was very dramatic and epic. I beleive there was also a boss encounter out of this and some type of time portal. I dont know if this was a dream I was having or if this is really in the game but much help would be appreciatated --- E3 2011 IN A NUTSHEL- http://i.imgur.com/BhYHo.gif
The place you're describing makes Sunleth Waterscape 300 come to mind, but Lightning isn't ever there (Snow is, though). I can't really think of any times where Lightning appears in a vibrant, colorful place, nor can I think of any times where there's a cutscene with Lightning followed by a boss fight (Except at the very very beginning, but those battles aren't really what I'd call boss fights). --- You can wax my huge spoon.