Blackfeather Darkrage Dragon [PGLD-EN017] Gold Secret Rare

1 Tuner + 1 or more non-Tuner monsters Once per turn, when you take damage from an attack or a card effect: You can send up to 5 cards from the top of your Deck to the Graveyard, then if any monsters were sent to the Graveyard by this effect, this card gains 400 ATK.