as far as i know there 2 ways to do it, both require RNGesus help.

his minion wont attack your taunt IF you have Kel'thazard, but his spell would,
so you need taunt, kel, and master of disguise(rogue deck) to give you kel stealth.
http://www.hearthpwn.com/decks/230729-hero...sath-cheese-win

the other way is(which i don't like);
he WILL play Mind game, and you only have 1 minion and thats is Majordomo Executus, kill it with Twisting Nether.
then he will only have 8 health left.
http://www.hearthpwn.com/decks/230857-twis...roic-drakkisath