Nonartifact spells you cast have improvise. (Your artifacts can help cast those spells. Each artifact you tap after you're done activating mana abilities pays for {1}.)
"In the early days, Urza's wondrous automatons were seen as symbols of hope and courage."
—*The Antiquities War*
NM-Mint - $1.10
Lightly Played - $1.10
Moderately Played - $1.00
Heavily Played - $0.90
Damaged - $0.70
NM-Mint Non English - $1.10
Lightly Played Non English - $1.10
Moderately Played Non English - $1.00
Heavily Played Non English - $0.90
Damaged Non English - $0.70
Foil Prices
NM-Mint Foil - $1.40
Lightly Played Foil - $1.30
Moderately Played Foil - $1.20
Heavily Played Foil - $1.10
Damaged Foil - $0.90
NM-Mint Foil Non English - $1.40
Lightly Played Foil Non English - $1.30
Moderately Played Foil Non English - $1.20
Heavily Played Foil Non English - $1.10
Damaged Foil Non English - $0.90