Amulet of Invulnerability (bludgeoning)

While you wear this amulet, you have resistance to bludgeoning damage. Additionally, you can use an action to grasp this amulet in your hand and magically become immune to bludgeoning damage until the end of your next turn or until you are no longer wearing the amulet. When you use this special action, until the beginning of your next turn, you and any nonmagical objects you are wearing or carrying, are transformed into granite. Your own weight increases by a factor of ten and you are incapacitated, cannot move or speak, and are unaware of your surroundings. Once this special action is used, it can't be used again until the next dawn.

Notes: Immunity: Bludgeoning, Piercing, and Slashing from Nonmagical Weapons, Combat, Warding