Animated Armor

When Find Familiar is active, it will take the form of an animated suit of armor. The armor acts independently of you, but it always obeys your commands. In combat, it rolls its own initiative and acts on its own turn. It's AC is equal to whatever armor it is wearing. The armor will choose to attack using whatever weapon it is holding. If it is not holding a weapon, then it will choose to attack with it's fists. Its Hit Points are equal to 18 plus the casters Charisma modifier. All other rules of a familiar apply to the armor when it is summoned. 

Made from tough but flexible leather, studded leather is reinforced with close-set rivets or spikes.