Manifest the top card of your library, then put X +1/+1 counters on it. (To manifest a card, put it onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.)
Near Mint - $0.20
Lightly Played - $0.20
Played - $0.20
Heavily Played - $0.20
Damaged - $0.10
Near Mint Non-English - $0.20
Lightly Played Non-English - $0.20
Played Non-English - $0.20
Heavily Played Non-English - $0.20
Damaged Non-English - $0.10
Foil Prices
Near Mint Foil - $0.70
Lightly Played Foil - $0.60
Played Foil - $0.50
Heavily Played Foil - $0.40
Damaged Foil - $0.40
Near Mint Foil Non-English - $0.70
Lightly Played Foil Non-English - $0.60
Played Foil Non-English - $0.50
Heavily Played Foil Non-English - $0.40
Damaged Foil Non-English - $0.40