Dark Nephthys

If you have 3 or more DARK monsters in your Graveyard and this card in your hand: You can banish 2 of them from your Graveyard; send this card from your hand to the Graveyard. During your next Standby Phase after this card was sent to the Graveyard by this effect: Special Summon this card from the Graveyard. When this card is Special Summoned: Target 1 Spell/Trap Card on the field; destroy that target.