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 - $2.700
Lightly Played - $2.100
Moderately Played - $1.900
Heavily Played - $1.600
Damaged - $1.400
Near Mint Spanish - $2.700
Lightly Played Spanish - $2.100
Moderately Played Spanish - $1.900
Heavily Played Spanish - $1.600
Damaged Spanish - $1.400
Foil Prices
Near Mint Foil - $4.500
Lightly Played Foil - $3.600
Moderately Played Foil - $3.200
Heavily Played Foil - $2.700
Damaged Foil - $2.300
Near Mint Foil Spanish - $4.500
Lightly Played Foil Spanish - $3.600
Moderately Played Foil Spanish - $3.200
Heavily Played Foil Spanish - $2.700
Damaged Foil Spanish - $2.300