Twilight Twin Dragons

If you control "Punishment Dragon": Target 1 "Judgment Dragon" in your GY; add it to your hand, then send the top 4 cards of your Deck to the GY. If this card is sent from the Deck to the GY by a "Lightsworn" monster's effect: You can target 1 "Punishment Dragon" in your GY; add it to your hand, then banish the top 4 cards of your Deck.