If an opponent would mill one or more cards, they mill twice that many cards instead. (To mill a card, a player puts the top card of their library into their graveyard.)
NM-Mint - $46.20
Lightly Played - $41.60
Moderately Played - $37.00
Heavily Played - $32.40
Damaged - $23.10
NM-Mint Non English - $46.20
Lightly Played Non English - $41.60
Moderately Played Non English - $37.00
Heavily Played Non English - $32.40
Damaged Non English - $23.10