hmm, this is an interesting idea. I think a solid deck can be built around this idea using liquimetal coating with mimic vat and manic vandal.
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way too slow :( you should be consistently getting a kill by turn 5. turn 2 kills should be possible with a properly built RDW deck. Check out surewhynot's deck to give you an idea how fast it should be. http://www.mtgvault.com/ViewDeck.aspx?DeckID=184060