Hearthpwn

The deck you are looking at is a meme it wont win offten or will it i dont know i dont have 50% of card listed in deck , this is pure theory.

so how this deck work "renounce darkness" is a meme part of it , you have reno to keep you alive befor you draft it 

Quest is your late game option you need to activate it with deathwing (hope it will work like this i dont have both cards didnt test this shit)

 to have 6 cards to discard we have refils like DOOM , pack from Elise and Harison , also some discovery efects

Quest is the only warlock card you wanna use before renounce darkness thats why always keep it vs control and muli it vs rogue , warrior and druids (token shit)