I like the Theme and Powerwolf, so + 1 from me ;)

Is there a reason why you use Ob Nixilis, the Fallen over Ob Nixilis, Unshackled? In my opinion, it synergizes very well with Varragoth, maybe because you need to chose an Opponent for its boast ability?

Wabbajacke , Ob Nixilis, Unshackled actually makes a real nasty combo with Opposition Agent but Ob Nixilis, the Fallen is the card I already own so that's what's in the deck for the time being at least

May i suggest picking up and adding in a Rune-Scarred Demon its a 6/6 demon and also tutors another demon or liliana's contract for you. also with you return from graveyard effects its repeatable as the tutor ability is an ETB and would slot into to this awesome deck like a dream.

vizea I had been considering rune-scarred demon, but was trying to avoid too many high CMC demons. Maybe I'll throw one in there and play a few games to see how it works out though!

Great deck! I recommend play testing Black Market Connections. It brings tons of value to tribal decks like this.

amarthaler thanks, great suggestion! I'll have to test that out