joe lossett won scg open with this exact deck, so i dont know. I will say that the best decks play 3s and 4s which better creates consistancy and synergy. In my current build, I play 7 (2,3,2 in bant) which may seem much, but creates a paradox for hero's down fall, detention sphere, and counter spells. That said, there are times I wish the walker was a creature, but in the end a win is a win and walkers require more resources to get rid of IMO.