Portal Warlock

The primary win condition of the deck is playing The Dark Portal on turn 4, then play the reduced King Phaoris on turn 5.

If that doesn't work or if you're being overwhelmed, try to keep your opponent at bay with all the removal this deck can manage until you can pull it off. If that also doesn't work, turn the game around with [Hearthstone Card (Shadow Counsil) Not Found] or Renounce Darkness.

It's not a highly competitive deck, but it's an absolute blast to play and it can steal games by RNG. Who doesn't like that? I highly recommend trying it out for yourself! It's not that expensive to build and it's a lot of fun! 

With enough likes, I can post a guide as to which cards to keep for what match up, general choices to make during the game, etc. 

Credits where credits are due: I saw Solem play this very concept, and I adjusted it to my own style with a few changes.