At the beginning of your end step, you may sacrifice a creature. If you do, look at the top X cards of your library, when X is that creature's mana value. You may put a creature card from among them onto the battlefield. Put the rest on the bottom of your library in a random order.
NM-Mint Foil - $13.60
Lightly Played Foil - $12.90
Moderately Played Foil - $12.20
Heavily Played Foil - $10.90
Damaged Foil - $8.90
NM-Mint Foil Non English - $13.60
Lightly Played Foil Non English - $12.90
Moderately Played Foil Non English - $12.20
Heavily Played Foil Non English - $10.90
Damaged Foil Non English - $8.90