Hearthpwn

This is the deck that finally allowed me to beat the Heroic Gluth as a priest.

No freeze mages here, you have to take so much of that dog's teeth directly to your face. But it's worth it.

The Acidic Swamp Oozes are of course necessary. Try to get one turn 1-2 to slow his initial rush. I do not have Harrison Jones, so it was a tad tougher since Gluth has 4 weapons, each a 3/5. With Harrison you really only need to tank one of them.

Without Harrison, save your Sludge Belchers until his board is pretty clear. You can wipe his entire board, and have his weapon gain +15 health, but hide behind your belchers to tank the hits. They work very well.

Your shadow word pains are for his Sludge Belchers. Don't waste them on the Unstable Ghouls. Your Holy Fires are for his 4/6 Smiths. Otherwise it's difficult removing them. A death for the 5/6 guy that kills his own minions.

Otherwise, play it very slow and many turns just heal pass, or control the board until his weapon is gone.

The divine shields are there so you have something on the board that can take two hits. I found that Gluth actually aims for the divine shields if it's there, which soaks up key weapon hits. 

I used the Mind Control Tech on the early game to control the board. Otherwise, he usually has 5 minions out on turn 2-3. If it's past turn 5, just throw the techs out to deal damage to his face.

If you are an experienced Priest player, you know how to use your HP as a resource, so wait for the ideal Circle of Healing Achenai bombs. 

Ragnaros is your win condition. Without them, you will need to attempt to rush him down with Commanders. Try to throw him down when the enemy has no board, or only 1 to give you a 50/50.

Most of the time, they will ignore ragnaros, even when he is at 1 hp, and just go for your face. Take advantage of that.

Once you have him top decking, setup the board to prepare for his next weapon. If he has a weapon out, and does not play a card he drew, it can only be another weapon. So plan accordingly. Once his weapons are out of the way, you win.

I finished this with 3 cards in my deck, 5 in his. Try it for yourself, and thanks for reading this.