Amdusias is a great duke of Hell and a fallen angel leading 29 legions of demons as well he is the 62nd spirit of the 72 of Solomon. If the conjurer wants to Amdusias from his unicorn form will transform to a human. His voice makes trees flee and once appeared music will be heard but no instruments can be found. He gives power to others to tear down trees and also gives excellent familiars to witches/wizzards.
His sigil:
