Artifact spells you cast have convoke. (Your creatures can help cast those spells. Each creature you tap while casting an artifact spell pays for {1} or one mana of that creature's color.)
An eye for detail, a mind for numbers, a soul of clockwork.
NM-Mint Foil - $3.60
NM-Mint Foil Non English - $3.60
Lightly Played Foil - $3.40
Lightly Played Foil Non English - $3.40
Moderately Played Foil - $3.20
Moderately Played Foil Non English - $3.20
Heavily Played Foil - $2.90
Heavily Played Foil Non English - $2.90
Damaged Foil - $2.30
Damaged Foil Non English - $2.30