As an additional cost to cast this spell, sacrifice an artifact. Search your library for an artifact card with mana value X or less, put it onto the battlefield, then shuffle.
NM-Mint - $3.40
Lightly Played - $3.00
Moderately Played - $2.70
Heavily Played - $2.40
Damaged - $1.70
NM-Mint Non English - $3.40
Lightly Played Non English - $3.00
Moderately Played Non English - $2.70
Heavily Played Non English - $2.40
Damaged Non English - $1.70
Foil Prices
NM-Mint Foil - $25.40
Lightly Played Foil - $22.90
Moderately Played Foil - $20.30
Heavily Played Foil - $17.80
Damaged Foil - $12.70
NM-Mint Foil Non English - $25.40
Lightly Played Foil Non English - $22.90
Moderately Played Foil Non English - $20.30
Heavily Played Foil Non English - $17.80
Damaged Foil Non English - $12.70