Kuvetd

The only thing I don't like is the heartless summoning + master of cruelties combo. With that you can't win with just the master of cruelties because your opponent will be camped out on one life with a 0 power creature staring it down (also a first strike deathtoucher with 0 power is really easy to block while a 1 power first strike deathtoucher is a nasty thing to have to block). But I love the idea, master of cruelties is sooo awesome!

Clone and infinite reflection as other considerations

^ I second the inclusion of slum lord I was about to post the same thing

Your lack of one drops is the real problem if you are aiming for aggro. This is an OK midrangey deck but you really don't get the full benefit of Exava because you have a few ways to give your creatures counters. And half of your creatures already have haste.

What about grisly salvage instead of thought scour. Grisly salvage gives you more selection and fills your graveyard much better. Also, slitherhead is a fun card to pair with Lotleth with its zero scavenge cost and its another one drop zombie to consider. Cool deck!

Yeah. Its so I don't mill myself and its a nice alternate win-con. It was either that or elixir of immortality but the elixir doesn't help with a win.

Rapid Hybridization on an undying creature. That's pretty innovative two for one. It'd be great if you did that in response to a pillar of flame or other removal especially

The only bad thing is that some of your best cards get minimal benefit from Heartless summoning(i.e. geralf's messenger and nighthawk). And heartless summoning makes you gain one less life and draw one less card with disciple of bolas. I like the idea, but I think there are a lot of other cards that take more advantage out of heartless summoning (like griselbrand if you an afford him or reaper from the abyss or lord of void,etc.)

You don't have near enough draw power to make this consistent. I think you could greatly benefit by being much more selective with your instants and sorceries and having multiples versus singletons. If you want to keep this variety, then definitely open up slots for cards like amass the components, a full set of think twice, thoughtflare and such. Augur is good, but he can't carry the team on his back and could potentially bury your planeswalkers.

With mulch/ grisly salvage you could probably afford to run less lands just off the principle of being able to "draw" into them using mulch/salvage. Its actually pretty good mana fixing

Its pretty crazy once it gets going and it also triggers off lotleth troll. If nothing else you get a 4/4 creature for four which isn't a bad deal. I've done a lot of different playtests decks around him or including him and he's served well enough.

I would recommend strangleroot for any deck that is aggressive and can afford his mana cost (your deck should be able to reasonably cast him). I mean having some woodland cemeteries would be nice despite their cost. Corpsejack menace is also a great card. Not only is he a pretty solid creature by himself he facilitates the scavenge mechanic. Pretty solid deck though, I've tinkered a lot in black and green decks so I can definitely appreciate what you're aiming for.

Agreed on the Shieldmate. Try Rogue's passage too, its a great utility land for what you're trying to do. If you want more hexproof there's lone revenant and his ability triggers off dealing damage too (so long as he's the only creature under your control) so it works well with unblockable. And with so much hexproof latch seeker probably should be dropped because all point removal will only have him for a target so you MIGHT get to swing with him once. Cool deck though, will definitely get better with Gatecrash I'd think

You should get a set of terminus. They aren't too expensive anymore. Or some more blasphemous act. You just really need more board sweepers it seems.

I don't think Falkenrath Aristocrat is near as good in this deck as it could be. I'm not sure how willing you'd be to sac one of your other creatures (even with unburial rites) to trigger its ability. Maybe Olivia instead or Thundermaw if budget is no issue (does not appear to be). I do find your reanimator sub-theme really interesting with Liliana and Tibalt as useful ways to fill your graveyard while advancing your planeswalkers.

-4 chronic flooding, +4 curse of the bloody tome. Its more mana for a card with a "lesser" mill effect, but it will be much more consistent because you don't have to rely on your opponent to tap the "flooded" land. Cool idea though, I'm an sucker for mill decks and I've always wanted to see azor's in a deck!

True story. And Jarad isn't very good when you'll only have a few creatures in your graveyard and even fewer to fling

If you can afford it, add in drowned catacombs or isolated chapels for more black mana (without having to hope for evolving wilds) or just run four evolving wilds instead of two.

Fair enough. I just love me multipurpose lands.

I would say that for any control deck that runs black and white, lingering souls and vault of the archangel are musts. At worst the spirit tokens can double as a feelings of dread by being blockers and at best they are killing the blocked creature with an activation of vault of the archangel and gaining you 2 life total.