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A take on my friend's deck: http://www.mtgvault.com/ViewDeck.aspx?DeckID=190337 Combo list: Liquimetal + Prototype: New Liquimetal every turn, making cards like Gorilla Shaman and Shattering Spree even better. Hoard-Smelter + Liquimetal: Destroy that pesky permanent that is messing you up and then swing with a buffed flyer. Isochron on Smash to Smithereens and Liquimetal with Magnetic Mine out- 5 damage for any artifact destroyed this way. Myr Landshaper to help hose the lands with Liquimetal and Splinter. Skyshroud to change any mana the way you need to. Ancient Stirrings to find artifacts you need or any lands you need.
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Viashino Heretic would be a good addition. Makes having a big CC creature a liability. It works well with the Liquidmetal Coating and even the Myr Landshaper.
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I explored some similar ideas in white/green at http://www.mtgvault.com/EditDeck.aspx?DeckID=305817