Heroic Magic Mirror Mill.

I played around with a few decks and found success after playing around the the old mill druid concept.

Basically you want to have him copy a cult master with his hero power or a mirror image mage secret and then the game will go easily for you. This is because whenever you play a minion a copy of it will spawn on HIS side of the board so after one, two or , favourably, three cult masters are on his side of the board his hand will fill up and he will begin to burn a lot of his cards. The same idea is behind the appearance of acolyte of pain in this deck. Coldlight oracle may seem a little odd since only you draw cards; However, duplicate will then put fresh oracles into his hand cause him to draw more and the 1/1 version that spawns will die easily and activate cult masters card effect drawing 3 cards from the coldlight oracle and cult master combined.Cult Master

Eater of Secrets, though somewhat mediocre, is effective to stall his secret use until you have your card draw ready for this boss. Kezan mystic too will turn one of his secrets on him and even is you steal his duplicate or mirror image this will favour you with more means to kill his minions and add to the card draw he will suffer.

Antique Healbot
Finally, try to be somewhat conservative with your antique healbot and healing touch as that is your only early and mid game form of healing. Using them frivolously will make it harder if you do get unlucky draws and must wait to use cult masters or acolytes. Kezan Mystic can assist this though if you manage to American Sniper yourself a duplicate + antique healbot combo giving you and extra 2 forms of 8 health for 5 mana and more bodies to activate cult master.

My original deck was not nearly as refined as this one, but the concept and goal is the same “Draw cards, Will die”. I hope this explanation and my deck will be helpful in your Kharazan experience. GGez