Found a good one for my deck: http://gatherer.wizards.com/Pages/Card/Details.aspx?name=Underhanded+DesignsWhenever an artifact you control enters the battlefield, pay 1 colorless and each opponent loses 1 life and you gain one life. I might have turns where 4-5 artifacts enter.
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Molting Snakeskin might be worth considering. Its an aura that give +2/+0 and 2 Colorless and 1 black:regenerate creature.
Yeah thats a consideration, but Im not sure how many they have in their decks. Plus we could always use cars to remove their graveyard before we use the card.
Also might want to consider Open the Vaults. Sorcery that puts all enchantments and artifacts from all graveyards onto the battlefield under their owner's control. I have it in my deck.
I would suggest adding Sigarda's Aid. http://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=414333 It allows you to cast auras as though they have flash.