The [[Enner Beast]] will yield one when killed; you may also find one in a shop or just lying about.
'''A'''pplying this tool ("You produce a frightening, will frighten off almost any hostile in the immediate vicinity. You cannot scare a [[Golem]] as they are emotionless magical constructs. Named Characters and Unique Monsters are also immune to the horn's effects.
Success message: "You produce a frightening, almost scream-like sound."