Rites of Transfiguration

You can adapt your patron's power to transform other creatures into forms more befitting their behavior or your whims. Your familiar learns , even if cursed metamorphosis isn't on your tradition's spell list. By spending 10 minutes in communion with your familiar, you can replace one spell of 6th-rank or higher you've prepared in one of your witch spell slots with a cursed metamorphosis spell of the same rank.