Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.) Search your library for an artifact card with converted mana cost X or less, put it onto the battlefield, then shuffle your library.
NM-Mint - $6.80
Lightly Played - $6.40
Moderately Played - $6.10
Heavily Played - $5.40
Damaged - $4.40
NM-Mint Non English - $6.80
Lightly Played Non English - $6.40
Moderately Played Non English - $6.10
Heavily Played Non English - $5.40
Damaged Non English - $4.40
Foil Prices
NM-Mint Foil - $13.30
Lightly Played Foil - $12.70
Moderately Played Foil - $12.00
Heavily Played Foil - $10.70
Damaged Foil - $8.70
NM-Mint Foil Non English - $13.30
Lightly Played Foil Non English - $12.70
Moderately Played Foil Non English - $12.00
Heavily Played Foil Non English - $10.70
Damaged Foil Non English - $8.70