alright for this one you form the handseals, focus your chakra into your surroundings and make feathers fall from the sky, making the living things in the area fall asleep. but do realize, it is a slow acting illusion, so it may take some time to create its full effect. (this was the one kabuto used in the chunin exam finals arc to make the ppl in the arena fall asleep when oro started attacking konoha)