Karn's Deck (EDH / Commander)

The deck is updated to Gatecrash (for Thespian's Stage), because I just didn't want to include any card with the new M15 frame (ex. The Chain Veil).
Initially, I wanted to include only cards with the old frame (ex. Chaos Orb), but I soon realized it would have been very challenging to come up with an actually viable deck.
The deck is a classic hardcore stax that eventually wins by generating infinite mana, either with Basalt Monolith + Rings of Brighthearth or Metalworker + Voltaic Construct, and shooting everybody with Goblin Cannon. Note that the typical win condition in this case would have been Walking Ballista, but the fact that it has a new card frame forced me to find an alternative, which I find kind of cool.
With infinite mana, one could also draw their entire deck with Staff of Domination to find Goblin Cannon.
In case of Basalt Monolith + Rings of Brighthearth, there is also a quite convoluted interaction with Sensei's Divining Top that lets your draw your entire deck.
On the other hand, Voltaic Construct can go infinite with any artifact that produces more than 2 mana (Mana Vault, Grim Monolith, Thran Dynamo or Everflowing Chalice with enough charge counters), provided that you turn it into a creature with Karn, Silver Golem.