Asag Metal Arm

Basic

This metal arm have no special or magical enhancements beyond their ability to move based on their holder's will. Unarmed strikes made with this limb use a 1d6 for bludgeoning  damage. Because the limb is not flesh and blood, it can be used for blocking attacks; if the prosthesis is an arm and it's not carrying or holding anything, your AC increases by 1.

The arm can be used as a spellcasting bonus.

Notes: Bonus: Armor Class, Natural Weapon: Bludgeoning, by an artificer