Vampire Retainer

“If this card is Special Summoned: You can pay 500 LP; add 1 "Vampire" Spell/Trap from your Deck to your hand. If this card is in your GY: You can send 1 "Vampire" card from your hand or face-up field to the GY; Special Summon this card, but banish it when it leaves the field. You can only use each effect of "Vampire Retainer" once per turn.”