@ enigma: Nantuko shade is good, but here he is going for creatures that are already big, utilizing pump from cards.
@ CavoCavi: I agree with Puschkin, Negator is going to make kill much easyer. Without it, you must run mass creature kill mainboard and deed dosent work here, unless u want to sac alot of your artifacts you need. Maybe Put an some edicts and scepters in so u can youuse ancestral and edict on the scepter. Acually thats kindof stupid, but the hard facts are w/out mainboard negators and perminant destruction, decree of justice or aggro is going to trounce you. Not sure about Nim Devourer either, He needs trample to be good, and is so easy to take out, you cant even swing at a factory early on. You spoke of gaining board control, well its going to be hard, 4dures, and 4hymn to gain you control, i know Im playing nether void. THis deck is pretty risky, the idea is okay, but sui or osawa is going to be far more effective, one edict, swords, deed, or blocker makes life really hard for you.
I made some edits and took out the Devourers and put in a Spiritmonger and Mutilate. Mutilate is good with big beefy creatures on your side and all my creatures survive it most of the time. I also have some in the sideboard against aggro. Check out the other edits I've made and tell me what you think.