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 - $3.20
NM-Mint Foil Non English - $3.20
Lightly Played Foil - $3.00
Lightly Played Foil Non English - $3.00
Moderately Played Foil - $2.90
Moderately Played Foil Non English - $2.90
Heavily Played Foil - $2.60
Heavily Played Foil Non English - $2.60
Damaged Foil - $2.10
Damaged Foil Non English - $2.10