At dusk, Strangleroot Geist
+
Young Wolf
are the harbingers of the night, and the endless ranks of terrors to come. Upon the dawn, there is no hope: just the Demonlord of Ashmouth riding a Vorapede, and they won't stay dead.
This deck is Golgari with early game control (Golgari Charm and Abrupt Decay) with some hints at aggro (Young Wolf, Strangleroot Geist, and Bloodsoaked Champion). Its mid-game is dominated by the undying creatures. The end game is nominally Demonlord of Ashmouth or Vorapede...although Geralf's Messenger is usually as far as you have to go.
Here's the gimmick of the deck: -1/-1 tokens + undying creatures. Undying brings a creature back with a +1/+1 token whenever it dies without a +1/+1 token on it. A -1/-1 token "cancels out" a +1/+1 token, so if you put a -1/-1 token on a undying creature with a +1/+1 token...it's now back to having no tokens, which means it can undie again!
The most obvious application is Everlasting Torment. Everyone gets wither. Wither makes any damage be done in -1/-1 tokens. Those -1/-1 tokens remove the +1/+1 token, which means when the undying creature dies, they immediately come back with a +1/+1 token. Rinse and repeat against your opponent's face.
The next option is to spend a single black mana to pick off the tokens with Retribution of the Ancients, which also works for targeted removal. Power Conduit is a one-off version: just remember that you can take off the +1/+1 token and make it a charge token on Power Conduit itself...or, if you're lucky, you can drop it on a Bloodsoaked Champion.
If you're scrambling for any of these counter removals, use Scarscale Ritual for digging up some cards while removing a single counter. Use Glistening Oil to neuter an opponent's creature: you can then chump block that creature and have your undying creatures resurrected over and over and over again. It's also possible to drop it onto one of your creatures to give them wither and a slightly extended life.
With the +1/+1 tokens being cycled off reliably, the opponent either has to choose to take the damage or to chump block: actually killing the creature will bring them back, over and over and over again. (This is especially brutal with Geralf's Messenger.)
So you come out swinging fast, you've got enough control to keep the board from getting away from you, and you have creatures that just won't quit. This is a fun deck to play, and an ugly one to face.
