Concussion Grenade

Select one point in the kill zone within ⬟ of this operative. Roll one D6 for each operative within ⬤ of that point, subtracting 1 from the result if that operative is not Visible to this operative. On a 4+, subtract 1 from that operative's APL. This operative can only perform this action once, and cannot perform this action while within Engagement Range of an enemy operative.