Rush from the Afterlife

You may cast Rush from the Afterlife as though
it had flash from your hand.
Target creature gets +X/+X and gains trample until end of turn, where X is the number of creature cards in your graveyard.
Flashback - {1}{b}{g}, Exile two creature cards from your graveyard. (You may cast this card from your graveyard for its flashback cost. Then exile it.)