Luna'parix, The Necroflame

Shroud
At the beginning of the end step, each player pays 2 life or sacrifices a creature. Return a creature from the graveyard with converted mana cost x where x is the amount of damage done this way.
{3}{p/r}{p/r}{p/r}: Sacrifice a creature, search your library for a enchantment card put that card on the battlefield.