The main cards.
Chaos Nova: large removal
Mo'arg Artificer: Early game body and a good combo with the decks spell removals.
Skull of Guldan: carddraw and cheap tools to keep the bord harmless and to conquer the bord.
Metamorphosis: Board control and to finnish off your opponent.
Ashtongue: Keep hp high enough to make it into the late game where we'll have supreme cards on our side.
Pit commander: Win condition who will summon our other Pit Commander or Wrathspike Brute/s or Priestess/ess of Fury to demolish the opponents board and finnish them off.
Priestess of Fury: Chip our opponent dead or in range for the board or Metamorphosis to finnish them.
Wrathspike: Stablelize the board from for example many smaller opposing minions. The minion will also weaken many hostiles which is key to making it to the late game.
Survive till you can play the BIG DEMONS and finnish it.