Blackwing - Bora the Spear (Blue) (Rare) - Duelist League Promo Unlimited

If you control a "Blackwing" monster other than "Blackwing - Bora the Spear", you can Special Summon this card from your hand. During battle between this attacking card and a Defense Position monster whose DEF is lower than the ATK of this card, inflict the difference as Battle Damage to your opponent.