When Riveting Rigger enters the battlefield, you may sacrifice another artifact. If you do, put two +1/+1 counters on Riveting Rigger and it assembles a Contraption. (Put the top card of your Contraption deck face up onto one of your sprockets.)
"Turn a blender into an arc welder with a portable fusion reactor and a frozen yogurt dispenser? We can do it!"
Near Mint - $0.25
Lightly Played - $0.24
Moderately Played - $0.19
Heavily Played - $0.15
Damaged - $0.10
Near Mint Non-English - $0.25
Lightly Played Non-English - $0.24
Moderately Played Non-English - $0.19
Heavily Played Non-English - $0.15
Damaged Non-English - $0.10
Foil Prices
Near Mint Foil - $0.25
Lightly Played Foil - $0.24
Moderately Played Foil - $0.19
Heavily Played Foil - $0.15
Damaged Foil - $0.10
Near Mint Foil Non-English - $0.25
Lightly Played Foil Non-English - $0.24
Moderately Played Foil Non-English - $0.19
Heavily Played Foil Non-English - $0.15
Damaged Foil Non-English - $0.10