The indestructable, hexproof zombies! (Standard)

One of the biggest issues I encountered while playing my first iteration of black/blue zombies was the lack of control I'd have over the board. If the key components of my engine, Relentless Dead/Diregraf Colossus, for instance were exiled or removed I was left with a pretty piddling board. That got me thinking and I stumbled across probably the coolest interaction yet that I'm attempting to build a deck around.

Now this is by no means a finished deck, but I feel like I'm on to something beautiful here. Elusive Tormentor transforms into the Hexproof/Indestructible Insidious Mist upon discarding a card - an easy transformation to accomplish -- Odric, Lunarch Marshall gives all creatures each trait; Hexproof, Indestructible, etc., effectively making the only solution to the problem an entire board-wipe.

If you manage to set this up you'll have a board filled with constant, indestructible/hexproof zombies and no amount of removal aside from an entire board-wipe will stop you, mix in the lifelink of Lone Rider to the mix and you're practically immortal.

Now how do I make this work? What cards do you all think would be the best? I've taken all the similar cards that I think would help and just kind of mashed them together.