Dark Nephthys (PTDN-EN018) - Phantom Darkness Unlimited

If this card is in your hand and there are 3 or more DARK monsters in your Graveyard, you can remove from play 2 of them to send it to the Graveyard. If this card is sent to the Graveyard by this effect, Special Summon it during your next Standby Phase. When this card is Special Summoned, destroy 1 Spell or Trap Card.