I went 5-0 (chose Boros and had ally of Rakdos, which had junk in it) and didn't drop a single game all day. I went some weird 4 color deck (no green) because I didn't have enough good cards in any one/two colors. So much mana fixing in the limited environment.
Have you thought about using Spined Thopter it's evasive, blue, and an artifact seems the best of all worlds, also Phyrexian Metamorph to copy virtually anything in your deck? Having Inkmoth Nexus can activate metalcraft for you in a pinch. Trinket Mage could fetch Flayer Husk and if you use Mox Opal. Maybe Darksteel Axe for a cheap indestructible artifact to maintain metalcraft.
I like my decklist. It's explosive, while not relying on one card to make it work. Dropping 3 Wurmcoil Engine on one turn is fun.
I'm not sure how I feel about Caged Sun, the amount of blue creatures isn't very high, and it would rely on Grand Architect to make an artifact blue to receive the boost.
My rares were Ral Zarek (Which I ult'd and got 5 heads...high fives were given all around) Obzedat's Aid, Pyrewild Shaman, Assemble the Legion (which is hilarious with the Black Maze Dude deathtouch haste duders), Catch/Release, foil Pontiff of Blight, and Guild Feud...hate that card.
Other all-stars Toil/Trouble...yes take 7 turn 3 on the play, Gleam of Battle, Holy Mantle, Madcap Skills, Splatter Thug, Truefire Paladin, and Ascended Lawmage.
1x Blightsteel Colossus
4x Myr Superion
2x Consecrated Sphinx
3x Wurmcoil Engine
Engine
4x Grand Architect
4x Heartless Summoning
2x Palladium Myr
2x Caged Sun
2x Sphere of the Suns
Utility
2x Spellskite
3x Treasure Mage
2x Mana Leak
2x Phyrexian Metamorph
2x Ponder
2x Think Twice
11x Island
2x Swamp
4x Darkslick Shores
4x Drowned Catacomb
2x Buried Ruin
1x Contagion Engine
2x Dismember
2x Go for the Throat
1x Mindslaver
2x Nihil Spellbomb
1x Steel Hellkite
3x Stoic Rebuttal
1x Treasure Mage
2x Steel Sabotage
I like my decklist. It's explosive, while not relying on one card to make it work. Dropping 3 Wurmcoil Engine on one turn is fun.
I'm not sure how I feel about Caged Sun, the amount of blue creatures isn't very high, and it would rely on Grand Architect to make an artifact blue to receive the boost.
Quite a few games were ended with Blightsteel Colossus, so I would prefer it to stay. Had to remove Inkmoth Nexus because Heartless Summoning makes Inky a sad artifact. I wanted to add at least two Tezzeret, Agent of Bolas, but I'm not sure what to take out and keep the deck explosive. BTW first post