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 - $2.930
Near Mint Spanish - $2.930
Lightly Played - $2.640
Lightly Played Spanish - $2.640
Moderately Played - $2.200
Moderately Played Spanish - $2.200
Heavily Played - $1.760
Heavily Played Spanish - $1.760
Damaged - $1.170
Damaged Spanish - $1.170