Hearthpwn

5 mana board clear pretty good.   3-5 corpses to clear small boards, 10 corpses to clear huge boards.  A must have in control decks I think.

Play Gruntled Patron with 3 Corpses and Corpse Explosion on turn 9 and play your  Sire Denathrius on turn 10

Something I find interesting is the prospect of if you already have a board of small minions, but want to clear off what your opponent has, you can choose to go face and use Corpse Explosion. Presumably the corpses that you gain from this card clearing your own board are able to be used as fuel to keep the chain going. Particularly interesting with Reborn mechanics like Graveyard Shift. Overall it does seem a bit too expensive though. Even if you're running full blood I could see this not making the cut.

You need it to do a minimum of 3 to be comparable to other clears.  Seems kind of weak honestly.

Clunky card. Control decks usually don't run a lot of minions so it might be tough getting this fueled up by turn 5. It may also unnecessarily burn all of your corpses when you don't want to, for example if they have board of 3/3 imps and one 6/6, and you have 5 corpses, then you'll use up all corpses and still not kill the 6/6.

But on the other hand this can be a 5 mana Twisting Nether later on, which is insane.

So it guarantees board clear.

Depends on how many corpses you have. Each time it repeats it spends a corpse.

as long as you have corpses. This will be really clunky, it remains but to see what will the capabilities of slower DK decks will be.