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.
Near Mint - $2.70
Near Mint Non-English - $2.70
Lightly Played - $2.50
Lightly Played Non-English - $2.50
Played - $1.90
Played Non-English - $1.90
Heavily Played - $1.70
Heavily Played Non-English - $1.70
Damaged - $1.40
Damaged Non-English - $1.40
Foil Prices
Near Mint Foil - $5.40
Near Mint Foil Non-English - $5.40
Lightly Played Foil - $4.80
Lightly Played Foil Non-English - $4.80
Played Foil - $3.80
Played Foil Non-English - $3.80
Heavily Played Foil - $3.20
Heavily Played Foil Non-English - $3.20
Damaged Foil - $2.70
Damaged Foil Non-English - $2.70