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 - $7.80
Lightly Played Foil - $7.00
Moderately Played Foil - $6.30
Heavily Played Foil - $5.50
Damaged Foil - $3.90
NM-Mint Foil Non English - $7.80
Lightly Played Foil Non English - $7.00
Moderately Played Foil Non English - $6.30
Heavily Played Foil Non English - $5.50
Damaged Foil Non English - $3.90