Armor Acrobat

Armor Acrobats are allowed to use the armor they usually wear or have in their possession during combat, 

HUDDLE: If you are a tiny or a low-end small creature, you can curl up into a piece of armor, AC increase by 3, to a max of 23, and after using the action, you can bonus action out of the armor, however if a creature hits you during a huddle, you are knocked prone and lose the AC of the armor. 

PUMMEL:  Hits a creature with a melee attack, does 1d6 damage for every 15 pounds, adds strength modifier, and proficiency to hit, however can only be used if both hands are available, and the armor is only a single piece.