What do fairies, pixies and satyr's want anyway? As far as I can tell, if they get their hands on some adventurers, they'll make them cavort and frolic with them. With just about any other creature I can figure out some need that pushes the beast into interacting with a party (creature needs food, needs habitat, is competing for something, needs the party to do something for it etc.), but since fairies and what not spend their whole lives dancing in faerie rings or having tea parties or whatever, they don't seem to have any real needs that would make them DO anything.