A.R.I or Automatic Repair Instrument is a device that can be planted into warforged's which gives the warforged's the ability to, whenever an action is spent not attacking heal their machine body and regain 1d4 Hp. this ability disables the ability to use health potions as the A.R.I kit needs to be installed in the part of a warforged's body that digests the potion. a warforged can, however, still drink Battery Packs which are variant health potions that can only be digested by constructs.