Riveting Rigger

Artifact Creature — Cyborg Rigger

When this creature enters, you may sacrifice another artifact. If you do, put two +1/+1 counters on this creature 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!"