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 - $2.30
Lightly Played - $2.20
Moderately Played - $2.10
Heavily Played - $1.90
Damaged - $1.50
NM-Mint Non English - $2.30
Lightly Played Non English - $2.20
Moderately Played Non English - $2.10
Heavily Played Non English - $1.90
Damaged Non English - $1.50