Beschreibung
Otherworldly magic touches your familiar. Your familiar gains additional hit points equal to your warlock level, its creature type becomes aberration, and you can use your bonus action to make its appearance alien, or revert it to normal.
While your familiar appears alien, it has advantage on Charisma (Intimidation) checks, and you can use your action to make it do something unnatural, such as gibber in maddening voices. A creature within 10 feet of the familiar that sees this must succeed on a Wisdom saving throw against your warlock spell save DC or be frightened of the familiar for 1 minute. The frightened creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.
Once you've made your familiar do something unnatural, you can't do so again until you finish a short or long rest.