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 mana value X or less, put it onto the battlefield, then shuffle.
NM-Mint Foil - $31.80
Lightly Played Foil - $30.20
Moderately Played Foil - $28.60
Heavily Played Foil - $25.40
Damaged Foil - $20.70
NM-Mint Foil Non English - $31.80
Lightly Played Foil Non English - $30.20
Moderately Played Foil Non English - $28.60
Heavily Played Foil Non English - $25.40
Damaged Foil Non English - $20.70