Mercy, Leira's Acolyte

Mercy, Leira's Acolyte costs {1} less to cast
for each creature card in your graveyard.
Once during each of your turns, you may
cast a creature spell from your graveyard.
—
"Eh Virsene! Metete la mascarita por el #!@%
de tus @#$&%#!@#%&!!"