4fd932d3_onsters___Yu_Gi_Oh__Card_Guide__Card_Text
[Card Name] Blackfeather Darkrage Dragon [Type] Synchro/Effect Monster [Attribute] DARK [Sub Type] Dragon [ATK] 2600 [DEF] 1600 [Card Text] 
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.
Yu-Gi-Oh! Level 8 Monsters - Yu-Gi-Oh! Card Guide
Card Text