Dark Contract with the Witch

Effect

You can send 1 "D/D" or "Dark Contract" card from your hand to the GY, then target 1 card on the field; destroy it. You can only use this effect of "Dark Contract with the Witch" once per turn. Fiend monsters you control gain 1000 ATK during your opponent's turn only. Once per turn, during your Standby Phase: Take 1000 damage.