Atchmon let out a huffing sigh, not understanding why Rarity wouldn't take his word for it. "T-the belief is that the air is full of both good and bad dreams. The beads in the web are supposed to attract bad dreams into it, where they're caught, while good dreams pass through the openings in the web and follow the feathers down to the sleeper. It's important to hang it over your head wherever you sleep; that way you'll have good dreams when they fall on you from the feathers hanging below it. Then, once the sun comes up, its light will burn away the bad dream. There's some other stuff too, and the details change between the different tribes on my world; but that's pretty much the gist of it."