Exile the top X cards of your library. You may cast instant and sorcery spells with converted mana cost X or less from among them without paying their mana costs. Then put all cards exiled this way that weren't cast into your graveyard.
Near Mint - $0.95
Lightly Played - $0.90
Moderately Played - $0.76
Heavily Played - $0.57
Damaged - $0.47
Near Mint Non-English - $0.95
Lightly Played Non-English - $0.90
Moderately Played Non-English - $0.76
Heavily Played Non-English - $0.57
Damaged Non-English - $0.47