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!"
![Riveting Rigger [Unstable] | Jack's On Queen](http://jacksonqueen.ca/cdn/shop/products/3bfcd4ec-d3bc-4aeb-824d-dc79543f8700.jpg?v=1569473241)
