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 - $4.000
Lightly Played - $3.200
Moderately Played - $2.800
Heavily Played - $2.400
Damaged - $2.000
Near Mint Spanish - $4.000
Lightly Played Spanish - $3.200
Moderately Played Spanish - $2.800
Heavily Played Spanish - $2.400
Damaged Spanish - $2.000
Foil Prices
Near Mint Foil - $9.900
Lightly Played Foil - $8.000
Moderately Played Foil - $7.000
Heavily Played Foil - $6.000
Damaged Foil - $5.000
Near Mint Foil Spanish - $9.900
Lightly Played Foil Spanish - $8.000
Moderately Played Foil Spanish - $7.000
Heavily Played Foil Spanish - $6.000
Damaged Foil Spanish - $5.000