You may look at the top card of your library any time. You may cast spells from the top of your library by sacrificing a nonland permanent in addition to paying their other costs.
Duskmourn never yields its secrets without exacting a brutal price.
Near Mint - $7.50
Lightly Played - $7.00
Moderately Played - $6.00
Heavily Played - $4.50
Damaged - $3.75
Near Mint Non-English - $7.50
Lightly Played Non-English - $7.00
Moderately Played Non-English - $6.00
Heavily Played Non-English - $4.50
Damaged Non-English - $3.75