Thunderhawk Cluster Bomb

Once per battle, a Grey Knights Thunderhawk Assault Gunship equipped with Thunderhawk cluster bombs can make a bombing run against a single enemy unit it has moved over during one of its Movement phases. After the Thunderhawk Gunship has moved, pick an enemy unit this is flew over. Roll 3D6 for every (Vehicle) or (Monster), or a D6 for every other model, up to a maximum of 12D6. For each roll of a 5+, the unit suffers a mortal wound. Units consisting of only (Characters) may not be targeted by this ability.