Mangonel Artillery

Artillery Barrage {t}{3} (Target a non-Starship
Vehicle card on the opponent's field for each Artillery Ground Vehicle card on the player's
field and destroy it. Can only be used when there
are two or more Artillery Ground Vehicle cards
on the player's field.)
Crew 1 (Equip one Trooper card): This card
gains +1/+1 to its attack and defense values for
each Artillery Ground Vehicle card on the
player's field.