Eric Weeden (Havik917 online) has been an Overextended trailblazer, constantly brewing Overextended decks and playing a new one each week. In week one of Tuesday Night Overextended, he played Pyromancer's Swath; week two he showed off his U/G Twelvepost deck; and in week three he brought this concoction to the table.

By his own admission, the deck is unrefined and needs some work. The numbers aren't tuned, and the perfect artifacts aren't lined up yet. (Myr Superion and Master of Etherium in particular might be getting too cute.) But the potential of this deck is incredible.

Imagine this. Turn 3, Grand Architect. Turn 4, Mishra, Artificer Prodigy. Tap them both for four colorless mana that can be spent on artifacts.

What now?

Epochrasite is clearly a sweet card to play, as the one you fetch is preset as a 4/4 thanks to the card's wording. Phyrexian Metamorph might be the true winner here, though. Play a Metamorph, which triggers Mishra. Both of them can enter as Grand Architects, not only netting you one mana in the process, but creating a gigantic army of blue creatures.

Or, y'know, if that doesn't work out you can just untap and find double Wurmcoil Engine.

There's so much else you can do with this shell. Eric's base is just the beginning. Gilded Lotus fetching Gilded Lotus? Solemn Simulacrum fetching Solemn Simulacrum? Moltensteel Dragon fetching Moltensteel Dragon? Mindslaver fetching Mindslaver!?!? There's so much you can do!

The one card I'm sure this deck is missing is Academy Ruins. Looping artifacts is certainly good, especially with Mishra around. Note that Mishra can pull from your graveyard, so you can pull some particularly sick things with Spellbombs, Courier's Capsule, and Executioner's Capsule, to name a few, if you also have Academy Ruins in play.

And of course, that's assuming you want to stay the control route. Tezzeret is conveniently in the right colors to combo finish your opponent with his ultimate. Throne of Geth finding Throne of Geth is even a possibility if you want to ultimate multiple times over a couple turns.

And that's just the tip of the combo iceberg. Do you know how Mistvein Borderpost and Mishra, Artificer Prodigy interacts? Yeah, it works the way you want it to. It's certainly not hard to fuel a Time Sieve when you get to double up on all your artifacts! You can even double up on Spellskite if you want to protect yourself from Maelstrom Pulse…

Mishra is certainly a card to watch. At 99 cents, it might be worth picking up a playset just in case…

Of course, that's not nearly all of the cool decks that have premiered, just some of my favorites that also fit into a Mirrodin forward framework. If you're willing to look back toward Odyssey and Invasion, all kinds of interesting decks have popped up in Overextended. From Hive Mind with Irrigation Ditch, to the two-card soft lock of the Delaying Shield/Phyrexian Unlife combo, to Tamanoa midrange, to Necrotic Ooze with Buried Alive, all kinds of decks I never imagined have sprung to life.