Cannot be used as material for an Xyz Summon, except for the Xyz Summon of a DARK monster. When this card is Normal Summoned: You can target 1 DARK "Vampire" monster in your GY; Special Summon that target in Defense Position. When this card is Special Summoned: You can declare 1 card type (Monster, Spell, or Trap); your opponent sends 1 card of that type from their Deck to the GY. You can only use this effect of "Vampire Duke" once per turn.