The goal of this deck is to use Expired Merchant to discard DOOM! 

Then, we Treachery it over to the opponent and kill it. Giving the opponent two DOOM! in hand.

The following turn we Mad Summoner, Sac Pact one of the Demons and play Unseen Saboteur to pull out the DOOM!

Making the opponent draw 14 cards!

Requires Emperor to only hit Unseen and Mad Summomer so they can be played together.

Challenging, but super fun!

Good luck!