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 - $5.600
Lightly Played - $4.500
Moderately Played - $4.000
Heavily Played - $3.400
Damaged - $2.800
Near Mint Spanish - $5.600
Lightly Played Spanish - $4.500
Moderately Played Spanish - $4.000
Heavily Played Spanish - $3.400
Damaged Spanish - $2.800
Foil Prices
Near Mint Foil - $12.400
Lightly Played Foil - $9.900
Moderately Played Foil - $8.700
Heavily Played Foil - $7.500
Damaged Foil - $6.200
Near Mint Foil Spanish - $12.400
Lightly Played Foil Spanish - $9.900
Moderately Played Foil Spanish - $8.700
Heavily Played Foil Spanish - $7.500
Damaged Foil Spanish - $6.200