Hearthpwn

A lot of late game value in this deck. Sense Demons seems good to fetch Krul and some other demons with! Really fun deck, but I'm not sure of it's viability (I've gotten to rank 7 with it).

You generally don't want to play Lord Jaraxxus, unless you need to avoid lethal. It's better to get out the 3/15 body with Krul. The same goes for Doomguard, unless you got lethal.

Bloodbloom is good combined with Kazakus' potion for the most part, but can also be decent with Siphon Soul or Twisting Nether.

Skulking Geist both provides a counter to Jade Druid and a way to remove the Mortal Coil from your deck in the late game.

Gluttonous Ooze, Skulking Geist and The Black Knight are tech cards that can be replaced, but I've found them to be pretty good. Acidic Swamp Ooze might be better than the gluttonous variant? I'm thinking of adding a Defender of Argus and/or Dread Infernal. I've found that Saronite Chain Gang is pretty good, though.