Greenless Zombies !

I would like feedback on this (un-playtested) deck: do you think it can play well? do you think it might me struggling in some vital areas of the game (board wipes? spot removal? drawing? ramping?).

Please take into consideration this is part of a 32 EDH decks challenge... with NO repeating card across them all. Now you can understand some glaring omissions, like the ubiquitous Sol Ring or Command Tower: they found a home elsewhere.

On a budget, to boot!