Add in repercussion then your Blasphemous Act will kick the living crap out of your opponent!
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Now with Innistrad you can plop in Witchbane Orb, and never get your stuff back that you dish out. And Dominus of Fealty well now you just choose your most feared and awesome foe and take it for your self. Or steal land's and really ruin someones day.
You can make it a turn 2 kill with 4 Lightning Greaves. As long as you can get another Dark Rit out.
I see what your doing, and I like it. Just wondering if you have enough creatures. Not many people are making the blue green graveyard deck. Heres mine. http://www.mtgvault.com/ViewDeck.aspx?DeckID=243076
Is 16 creatures enough to fuel the Splinterfright and Boneyard Wurm?
Just FYI Earthcraft is restricted.
Earthcraft
I have a deck right around what you are doing. But geared for a 5 way mono color each FFA.