Exile the top X cards of your library. For each instant and sorcery card with converted mana cost X or less among them, you may cast that card without paying its mana cost. Then put all cards exiled this way that weren't cast into your graveyard.
Near Mint - $2.00
Near Mint Non English - $2.00
Lightly Played - $1.90
Lightly Played Non English - $1.90
Moderately Played - $1.70
Moderately Played Non English - $1.70
Heavily Played - $1.50
Heavily Played Non English - $1.50
Damaged - $1.20
Damaged Non English - $1.20