Another good additiong could be Kruphix, God of Horizons which is green blue allowing you to pool colorless mana infinitely, also get more Prophet of Kruphix. Get Hydra Broodmaster, play him on your turn, monstrous him on your opponents end step have a bunch of strong tokens then attack your following turn.
Permalink
I like it, but the problem that i am seeing is that the mana that I draw every turn is not corresponding to everything else. You should try to throw in some shock lands so you can guarantee your mana base. Also if this is casual throw in dual and fetch lands. Dual are 2 colors and gain you life, Fetch is like a better evolving wilds getting you any mana you need.