The idea of the deck is to try to build up a field of Artifact creatures and hold off until you can drop a Scuttling Doom Engine or Ensoul Artifact a Darksteel Citadel. Once you get your heavy hitters out you start attacking in to punch through as much damage as you can before finishing them off by Shrapnel Blasting the Scuttling Doom Engines.

The Dissolve, Stubborn Denial, Phyrexian Revoker, and Lightning Bolts are to keep the enemy board relatively clear and/or deny big threats.

Burnished Hart and Evolving Wilds are mana fixes to grab whatever color it is you need or to ramp.

Taigam's Scheming, Treasure Cruise, and Dig Through Time are to help keep up card draw and ensure you have the Scuttling Doom Engines and Shrapnel Blasts you need to close out a game.

The deck is relatively budget, the most expensive pieces being the Dig Through Times. These can be replaced however with two Dissolves if you want more board control for a cheaper budget.