Hearthpwn

Is this the card with the most characters in its name? It has 28.

Currently the only 'Rainbow' DK card we have that spend corpses are: Darkfallen Neophyte, Malignant Horror. Corpse Bride, Boneguard Commander, and Bonedigger Geist since they've confirmed that it can only be in Rainbow decks.  We can still discover other spells that spend corpses like Corpse Explosion.  I think it's a shame we can't discover, but imagine other classes getting ahold of this.  The Scourge was bad enough.

A rainbow deck can still discover non-rainbow cards (e.g. They could use Vulpera Scoundrel, School Teacher, Ghost Writer, and Nerubian Vizier to find other DK spells that spend corpses) 

am I the only one that sees this card fitting in an aggro token DK deck? like, the goal is to generate as many corpses as possible to spend them all in this spell to the opponent's face, right?

I think it upgrades by amount of corpses spent by other cards during game. This card doesn't spend any Corpses I think

Yeah, the spell upgrades on corpses you've spent throughout the game.  Based on it's wording, doesn't seem to have to be in hand for it to upgrade.

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what does randomly improve mean here? Can it deal more than 5 dmg?

They explained it on Twitter:

"Any one of those 4 numbers (5 / 2 / 1 / 1) will go up per Corpse you've spent this game. Say you've spent 10 corpses, this could be: - 5(+2) / 2(+3) / 1(+4) / 1(+1) = Deal 7, summon 5 5/2s or even - 5 / 2 / 1(+10) / 1 = Deal 5, summon 2 11/1s (the 2nd number is capped at 7)"

Very weird effect, sounds fun though.

The best part about this card is its runes, makes it extremely easy to discover.

Edit: Cannot be randomly generated.

https://twitter.com/MyntyPhresh/status/1635794460239089664?s=20

If nothing else it's gonna be really funny when you discover this in other colors in the right games for it. It's gonna be like The Scourge on crack. Rainbow though can't run corpse explosion or marrowgar. Could be really good but needs a slow enough meta and some bigger and better corpse spenders in rainbow. I don't think malignant horror and corpse bride are that good, and I don't think boneguard commander's enough by himself.

A strong card for sure, but I don't know if it's possible to build a deck around it. At 10 mana you're definitely playing a control deck, which will be difficult in itself with just 1 Blood. But there are still cards to be revealed so it might turn out to be viable.

In either case we will be seeing a ton of this card through discover effects, which is a huge buff to the class as a whole.