That would make the deck non-standard legal though
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I would add some Ensoul Artifacts. Use it on Darksteel for a 5/5 indestructible on T3 (you'd need Caryatid out to pay for it though). Could also add Ornithopter to pair with Ensoul for a 5/5 flying.
I created a much cheaper version of this deck ($10~) by replacing the $8 and $2 lands with cheaper alternatives:http://www.mtgvault.com/ember/decks/budget-infinite-deathtouch/