Hearthpwn

This boss focuses heavily on the cubes, and does not do much in order of clearing your minions. 

This deck utilises lackeys and spells to overcome the boxes and large taunts. You can have a steady flow of lackeys with Grand Lackey Erkh, which will enable you to control the board much better as long as you kill your own lackeys. The EVIL recruiter pairs nicely with the shadowflame, and plague of flames is a great finisher. Save spells that destroy a single minion for the taunts unless necessary, and always grab those from spell lackeys when you can.