Heroic Champion - Gandiva

[ Warrior / Xyz / Effect ] 2 Level 4 Warrior-Type monsters Once per turn, when a Level 4 or lower monster(s) is Special Summoned to your opponent's side of the field (except during the Damage Step): You can detach 1 Xyz Material from this card; destroy that Special Summoned monster(s). ATK/ 2100 DEF/ 1800