Inspired by the deck on CFB by Gabriel Nassif. Edited mainboard to be more consistent, completely changed the sideboard (mostly due to card availability).
Also testing Carrion Feeder in the unearth slot to have extra vengevine triggers, free sac outlet for gravecrawler and a backup threat. Right now in my testing unearth seems better in that it can be any creature in the graveyard other than vengevine (mainly used to keep milling) and also is another trigger for prized amalgam.
Drowned Rusalka was left out by Nassif but I think that was a mistake. In my testing it does work keeping mills going while getting cards out of your hand. Seriously considering adding a 4th.
I'm still on the fence regarding tome scour vs grisly salvage. An additional turn 1 card that digs is strong and on turn 2 one can scour and play a creature so for now scour has edged out salvage but the ability for GS to set up a massive turn 3 shouldn't be overlooked.
Added 1 dakmor salvage -- sometimes you just need a land to keep crab mill going or power out a bloodghast. Having dakmor in the yard at those times is great especially if you dredge it off a rusalka
I have been considering adding scavenging ooze in place of creeping chill. Pros: adds creature trigger for vengevine, another target for unearth, helps stabelize life like creeping chill, not a dead card when drawn, backup threat if game goes long, great vs graveyard mirrors. Cons: creeping chill is free and likely does more damage, creeping chill helps life bounce back faster, having additional Mana investment for non-main game plan seems bad.
Lastly, I should note this deck sideboards and mulligans well: don't be afraid to go to 4, you'll likely get 2 cards in the 7 you're happy to put back in your deck to mill - all you really need are 2 lands and 2 spells that let you mill and you're good. For sideboarding you can easily remove unearth and rusalkas (6 cards) without changing the main strategy at all, if you're really desperate you can remove creeping chill (for a total of 10 cards) without changing the beat down strategy too much.
