Hearthpwn

Intro

Im sure this could be optimized. But I dont really think it needs much work (needed a bit  xD). Got it in a few tries. tho you do have to use your brain a lil. 

Basics

Control the board. your minions mostly clear the board or value effectively. Cult apothecary can easily top you off. Doomsayers an MVP.  finish off with Major Domo (you kill the 1/1 copy which replaces his armor/hp with 8 hp and he loses his hero power.)

Watch out for

The most threatening card is his Rhonin. Your answers are win before it. ignore it. steal it with mind control tech. also you can try to kill Rhonin when his hand is full. 

Tips

His secrets seem to be Counter Spell, Duplicate, Mirror Entity. Secret eater probably better then Kezan but i wanted to try em both (cut because of next line). You can abuse these secrets (mirror/duplicate your sheep for example)

Battlecrys trigger after his hero power copy. so mind control tech can steal on a 3 minion board for example. 

If it wasnt obvious, Sheep/tentacles/abomination are board clears because you kill the 1/1 with dagger and trigger rattle twice.

Make his secrets copy your bad minions and he will set you up with board clears or you can make him over draw.

Theres a few other lil tricks in there im sure you can figure out.

Replacements

Feel free to ask. Ill edit in suggestions if they're superior. 

Trying to decide if Emperor is worth for example. Hes in now

Closing

Might not be the best deck for the quest but its pretty fun and can get the job done. 
Good luck.

 Edit: after playing it a few more times I discovered drawing Major Domo was the hardest part so I added some card draw.

If you wanna win fast Ive noticed a mill deck of some sort would probably be best way to go about this quest. This decks still fun and I havnt tested mill yet but im sure you can find some lists that work and just add the sheep type cards.