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.
Near Mint - $5.100
Lightly Played - $4.100
Moderately Played - $3.600
Heavily Played - $3.100
Damaged - $2.600
Near Mint Spanish - $5.100
Lightly Played Spanish - $4.100
Moderately Played Spanish - $3.600
Heavily Played Spanish - $3.100
Damaged Spanish - $2.600
Foil Prices
Near Mint Foil - $15.300
Lightly Played Foil - $12.200
Moderately Played Foil - $10.700
Heavily Played Foil - $9.200
Damaged Foil - $7.600
Near Mint Foil Spanish - $15.300
Lightly Played Foil Spanish - $12.200
Moderately Played Foil Spanish - $10.700
Heavily Played Foil Spanish - $9.200
Damaged Foil Spanish - $7.600