Black and Artifact based, with counters running rampant.
Bit of Clarity on: Consume Spirit, Exsanguinate and Suffer the Past; I currently have one of each in the deck, but I'm considering narrowing it down to 3 of one of them. They all do roughly the same effect, X mana cost and gain X life. So when I do get the Prototype Portals and Voltaic Keys, I want to fill those last 3 slots with some life gain, to help prevent me from losing too quickly.
I'm on the fence about Everlasting Torment. Its an amazing card, but not when you rely on life gain... like I plan this deck to do...
The goal of this deck is to basically gain control over the opponent's field by leaving them with no creatures, and having a wall of metal on my side. I do this with Kulrath Knight and Trigon of Corruption so they're creatures can't attack/block. Then I Prototype Portal a Voltaic Key. Using the infinite mana provided from my Myrs, I begin to put in thousands of Keys (untapping the portal with the newly created key), mean while sacrificing the key (after it untaps the portal) with Throne of Geth to proliferate the counters on all my things.
The only problem I can see with this is Thought Gorger. If it has 1,000 +1/+1's on it, and they blow it up, well that's a thousand cards I have to draw. Library of Leng makes me have no max hand size, so that's not the problem. The problem is then I have no cards to draw from my library, thus losing the game. So I just have to avoid putting too many counters on Thought Gorger, which is a simple matter.
Cards to Acquire: 1-4 Darksteel Reactors; 2 Prototype Portals; 3 Voltaic Keys; 1-4 Contagion Engines; 1-4 Magistrate's Scepters.