Version 3.0 I think I had a bit too many mana fixers, as well as too many land. So I cut some of both and I upped the power level of the creatures a bit.
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Version 2.0: Was having issues with too many different double-mana casting costs, so I changed the numbers around and added Avacyn's Pilgrim for additional fixing. Does seem to have helped. By turn 5 or turn 4, the board state can get really stupidly fun.