EDH Help Needed

I play a lot of different types of decks, however when I try to design something different I cannot seem to get the right combos in. This is the second EDH deck I am working on and this one is putting the stomping to me. I know it will work but I lack the right ideas to finish it. Can someone offer some thoughts?

http://www.mtgvault.com/ViewDeck.aspx?DeckID=324178