I should also mention, this is STANDARD.
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Rancor some Mutavaults for added token consistency in the beginning. Tap one, Mutavault becomes a creature,Rancor it, end turn, Rancor goes to hand. Rinse, repeat. Its another bit of consistency when the main focus of the deck fails. Proxy in the Mutavault to see how it will work out.
How about Mutavault instead of a sac outlet?
Does anyone have suggestions for this? I was already considering taking out a couple of mana dorks for Witchstalker. Overgrown tomb should probably go as welll.