Badge of Familiar Protection

This badge, stamped with the image of your patron, is worn by your familiar.

This badge has one charge. Once per long rest when your familiar takes lethal elemental damage, you can expend a charge so that rather than being destroyed, it disappears from the current material plane and loses access to its current form. It can be brought back as an action in a different form you decide as outlined in the pact of the chain feature. It regains access to the lost form after a long rest and the badge regains its charge on a long rest.

Notes: by a warlock with pact of the chain