During either player's Damage Step, when a "Blackwing" monster you control is attacking or being attacked: You can send this card from your hand to the Graveyard; that monster gains 1400 ATK until the End Phase.
Near Mint Unlimited - $59.00
Lightly Played Unlimited - $56.00
Moderately Played Unlimited - $50.20
Heavily Played Unlimited - $44.30
Damaged Unlimited - $41.30