In this PvE story expansion, take a trip to the tinkerer god Sotha Sil's long-lost sanctuary. In the ruins of the Clockwork City, encounter over 55 new cards, 35 story missions and brand-new mechanics like Treasure Hunt, which peruses each card you draw for the next big score and Assemble, which allows you to rebuild Sotha Sil's abandoned creations with your choice of augmented ability!