Spectre of Dept

So paying LP is a thing that they made Vampires do, so why not make a card focused around paying LP? Simple, if you pay LP to activate a card or effect, you get to Special Summon this card. Additionally, DARK Decks benefit a lot from this card by it also gaining ATK and DEF equal to that paid LP, so you can beef this card up, but if it has another use as well, as it can increase its own Level by paying LP, and an effect that gives an Xyz Monster the effect to add another copy of this card from your Deck or GY to your hand. This works well in Vampires of course, as they have Rank 5s and 6s, so the cost isn't too huge, unless that's what you're going for of course.