So this deck started as a Sultai Delve deck, but it has kind of morphed into the deck you see here.
A few decks that inspired me are here :
Floodvine (Sultai Dredgevine)
http://tappedout.net/mtg-decks/01-09-15-exile-is-only-temporary-copy/ (Sorry guys, I couldn't get Tappedout to recognize that this was a deck)
This is Why Troll will be Banned in Modern [KTK]
A big thanks to these guys, and if you're interested in decks kind of like this one, you can check those out.
But enough of that, let's move onto the deck itself. The main interaction in this deck is getting Vengevine into the graveyard with Lotleth Troll or Grisly Salvage, and then to cast a lot of small things (with recursion) to get Vengevine out onto the field. The deck uses Blood Artists to punish blocking my small creatures (and if they do block, my creatures will come right back). Liliana of the Veil is as useful as always. The way this deck bounces back from grave hate is the Ground Seal in the mainboard. It might seem counterintuitive, but all it does is protect my graveyard from being targeted. The creatures in it can activate their abilities just fine!
The deck also boasts Viscera Seers, and the reason is this - Gravecrawler
+
Viscera Seer
. If I happen to have another zombie on the field, it doesn't matter if I have no creatures to cast, because I can sac the Gravecrawler twice to put all my Vengevines on the field.