Mecha'thun quest warlock

Yet another deck trying to do too much. 

Probably better to cut the quest, probably better to not go singleton (exception double plot twist) but it's fun. 

Control warlock has enough issues without -1 card and no duplicates of the precious few AOE's. 

BUT. ITS. FUN. 

Lets just enjoy hearthstone a bit longer before LoR takes away more of the playerbase.