Hearthpwn

It's a 5 mana 4/4 that does nothing when played. It's really slow and even with a double discover, it's still not great. You spend 5 mana to do nothing, and you have to hope the spells you get aren't complete garbage. Cool effect, but nothing special to write home about. 

Hate Rogue more than you usually do.

Might as well color it for Death Knights.

This is ultra premium in Arena. Ethereal Conjurer cries.

this seems broken to play on curve...

Why blizzard just why?? Double discover and even undead Synergy ... and no less with a condition that you can't even call a conditions .All good decks are designed so you play on a curve nobody wants to float mana . Even a total newbie can  see before release that this is broken , how does this shit get past professional testers.

Can see Blood DK appreciating the chance to generate more Vampiric Blood.
We have seen that in modern day hearthstone the ability to have a body that generates a spell is still good.