Hello and welcome to my quest warlock theorycraft!

My idea for this deck was to make it a slower control deck with an arsenal of late-game threats. So I'm going to briefly discuss some of the inclusions in this deck and why I chose them:

Supreme Archaeology:

When you're playing a control deck like this, there isn't a lot to do in the early game and the quest gives you some early game with cards like Questing Explorer and Plot Twist  with cards like Aranasi Broodmother to keep you alive for your powerful late game. 

Kanrethad Ebonlocke:

Even though his first form is not that useful for your deck, his prime form Kanrethad Prime will more than likely be a huge late-game threat with the only demons that can be summoned being Enhanced Dreadlord, Desperate Dreadlord, Aranasi Broodmother, and the demon from Abyssal Summoner.

The Dark Portal:

Since you don't have much in terms of the early game, and your goal is to draw cards for quest you will likely have a large hand. I did my best to leave out as many cheap minions as I could to make sure this card hits something impactful. 

Keli'dan the Breaker:

This card seems like it will be fairly powerful whether you draw it discounted from The Dark Portal or [Hearthstone Card (Tomb of Origination) Not Found] or maybe you draw into it from Plot Twist. 

I included a dragon package for cards like Nether Breath and Crazed Netherwing which have both proven to be powerful cards for mid-game board control. As always if you have any opinions for the deck or ideas to improve it, let me know in the comments and I'll do my best to respond as fast as possible. Thanks again for checking out my theorycraft, I'm super excited about this expansion and to see what everyone else comes up with!

(Also sorry this deck is not f2p friendly, but I love playing control decks. Can't wait to get farmed by demon hunters!)