Soo, i've been locked away not looking at anything else going on in the world of magic pretty much since
Semblance Anvil 
was printed, and i've come up with the following combolicious deck that has performed well against everything i've thrown at it. I'd like people to toy with it, see if it really is competitive or if i'm crazy, and to run out their combo-producing creativity to see how much more broken this could become.
10 island
10 swamp
2
Blightsteel Colossus 
2
Thopter Assembly 
2
Kuldotha Forgemaster 
4
Semblance Anvil 4
Ichor Wellspring 
4
Kaleidostone 
4
Prophetic Prism 
3
Time Sieve 
4
Spell Pierce 
3
Fabricate 
4
Tumble Magnet 
If you don't get the combo--it's really straightforward. Semblance anvil means you have lots of cantriping artifacts, a small delaying suite, and one simple goal--throw down (in one turn) either a kuldotha with a spell to protect it or a time sieve infinite-turns combo, set off said combo using other artifacts, and rinse/repeat using thopter assembly. I've found that this deck performs best versus aggressive strategies, while being quite weak only to variants of caw-blade, a weakness that should be safe enough considering how much everything else is gunning for caw-blade. What I like best about this deck is that it does not really care what your opponent does--provided you can land a semblance anvil at some point early on (or even if you can't) the deck takes off very quickly, oftentimes going infinite by the 5th or 6th turn. Now, while this might seem a bit slow for Extended combos, The sideboard is all the magic and this list was tested before the release of all the New Phyrexia goodness, certain free draw spells which could greatly help this deck's odds. Have at it--be mean, be nice, but at least try it out as a deck before you trash it.
