Pendulum Effect During your Main Phase: You can destroy this card, and if you do, add 1 "Black Horn of Heaven" from your Deck to your hand. You can only use this effect of "Harvest Angel of Doom" once per turn. Monster Effect If this card is Normal or Pendulum Summoned: You can add 1 "Horn of Heaven" from your Deck to your hand. If this card is Tributed: You can place this card in your Pendulum Zone. You can only use each effect of "Harvest Angel of Doom" once per turn.