At the beginning of your end step, if you control a creature, look at the top seven cards of your library. Then you may sacrifice a creature. If you do, you may put a creature card with mana value X or less from among those cards onto the battlefield, where X is 1 plus the sacrificed creature's mana value. Put the rest on the bottom of your library in a random order.
NM-Mint - $6.50
Lightly Played - $5.90
Moderately Played - $5.20
Heavily Played - $4.60
Damaged - $3.30
NM-Mint Non English - $6.50
Lightly Played Non English - $5.90
Moderately Played Non English - $5.20
Heavily Played Non English - $4.60
Damaged Non English - $3.30
Foil Prices
NM-Mint Foil - $15.20
Lightly Played Foil - $13.70
Moderately Played Foil - $12.10
Heavily Played Foil - $10.60
Damaged Foil - $7.60
NM-Mint Foil Non English - $15.20
Lightly Played Foil Non English - $13.70
Moderately Played Foil Non English - $12.10
Heavily Played Foil Non English - $10.60
Damaged Foil Non English - $7.60