Send 1 'DD' or 'Covenant' card from your hand to the Graveyard, then target 1 card on the field; destroy it. You can only use this effect of 'Covenant with the Dark Witch' once per turn. All Fiend-Type monsters you control gain 1000 ATK during your opponent's turn only. During each of your Standby Phases: You take 1000 damage.