Illusionary Bells: Cicada Swarm

The user runs chakra into one of their bells, causing it to emit an eerie sound like that of a chirping cicada. Anyone other than the user who hears it will have hallucinations that cicadas are swarming. If the illusion is not broken after a minute or two, the cicadas will engulf the hearers. The body will believe the victim to be suffocating, and so will pass out.