This Artificer deigned tool consisted of a small box- filled with metal gears and diamond pipes- attached to two small metal disks with sensible rubber handholds. 

Requires a DC 10 Medicine check to use successfully. Can hold 2 charges. Gain 1 per day after being charged in the sun or charged with lightning.

When successfully applied to a creature who has recently died (probably in the last minuet or so), it can revive them to 1H.P.! Though they will be sore and exhausted and probably enjoyed the experience less than actually dying.

When used unsuccessfully, the A.E.D.'s shock is instead applied to the user. They must make a DC11 CON save or take 3d10 lightning damage and are paralyzed until the end of their next turn. If they succeed they take half damage and are not paralyzed unless by shame and embarrassment.