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 - $6.90
Lightly Played - $6.20
Played - $4.80
Heavily Played - $4.20
Damaged - $3.50
Near Mint Non-English - $6.90
Lightly Played Non-English - $6.20
Played Non-English - $4.80
Heavily Played Non-English - $4.20
Damaged Non-English - $3.50
Foil Prices
Near Mint Foil - $7.70
Lightly Played Foil - $7.00
Played Foil - $5.40
Heavily Played Foil - $4.70
Damaged Foil - $3.90
Near Mint Foil Non-English - $7.70
Lightly Played Foil Non-English - $7.00
Played Foil Non-English - $5.40
Heavily Played Foil Non-English - $4.70
Damaged Foil Non-English - $3.90