You have learned the secretive ways of the pillow with some help from transformation magic.

As a bonus action, you can transform into a small pillow weighing 4 pounds with an appearance of your choice. Upon transforming, you gain temporary hit points equal to your proficiency bonus that remain as long as you are transformed. While in this form, you can't take actions other than a bonus action to revert back, reactions, move, or speak, you have resistance to nonmagical bludgeoning damage, and you are immune to all conditions except for invisible, as you are, well, a pillow. This transformation lasts until you revert back with a bonus action or when your temporary hit points are depleted.

You can use this action a number of times equal to your proficiency bonus before you must complete a long rest to use this feat again.