This deck is designed to abuse Arcbound Ravager's ability to move counters across artifact creatures with Hardened Scales and Winding Constrictor. The idea is that Arcbound Ravager sacrifices other artifacts to him to get +1/+1 counters on him, then dumps them onto Walking Ballista or a Hangarback Walker to burst opponents for huge amounts of damage.

Let's go through the decklist to show you how each component is important.

Ancient Stirrings: This card allows us to dig through our deck for essentially any component we need. It digs for lands, Ravagers, fodder, AND our finishers, all for 1 mana.

Animation Module: Good against midrange, as it allows us to create servos every time we cast Ravagers, Ballistas, Walkers, or Workers, which can be used as fodder or to swarm our opponent.

Arcbound Ravager: The engine of this deck. You absolutely need these. The only (maybe) substitute would be Bloodflow Connoisseur. However, it restricts us to just swinging tall.

Arcbound Worker: BEWARE THIS CARD. You may think that this is just a dumb 1 drop 1/1, but towards the mid game, you could be dropping 1 mana 4/4s that boost other creatures when they die. They make crazy good Ravager fodder, as with just 1 Scales effect on the battlefield, you'll get 2 counters for sacrificing the Worker, then you can move however many counters were on the Worker plus one onto another artifact creature. Say he's a 1/1. Sacrifice him to Ravager, and you create 4 counters from a 1/1. Just stupid good for this deck.

Blooming Marsh: Just a fast land. Pretty good for budget manabases.

Darksteel Citadel: It's an artifact. It's a land. Tap it for mana or sacrifice it to Ravager.

Hangarback Walker: Easy to cast, has an ability to make itself bigger, and gives the deck some much needed flying. Gives crazy fodder to Ravager in a pinch.

Hardened Scales: Makes the deck very efficient by giving everything more counters.

Inventors' Fair: A utility land that gains us life if we have 3+ artifacts out. Also fetches for any artifact should we need one later on.

Scrap Trawler: Gives this deck recursion. Retrieves Ravagers from the grave when it dies, or better yet allows you to recur all of your threats while you sacrifice things to Ravager. Sacrifice a 2 drop? Get a 1 drop back to your hand.

Servo Schematic : One of the most underrated cards in this deck. In essentially every other deck, it's terrible, but in this one, it creates 3 pieces of Ravager fodder AND is a 2 drop that can recur Workers, Walkers, or Ballistas with Trawlers. Does serious work.

Spire of Industry: Does everything that Glimmervoid can and more.

Springleaf Drum: Taps down our summoning sick creatures to fix our mana, gives some more fodder for Ravager, and can recur our finishers with a Trawler.

Walking Ballista: One of the finishers for the deck. It's big, it's scary. It board wipes weenies. It can chump block, then burn an opponent. It does it all. So good.

Winding Constrictor: A second set of Hardened Scales on a stick. Provides a nice body to block bears, and makes the deck that much more efficient. Sacrifice an artifact to put a counter on Ravager? Make that two, please!

Please give me some feedback on what changes you'd think would improve the deck. My sideboard could really use some help right now.