Hearthpwn

Sha of Anger is a slow card for slow decks.  Basically in order to squeeze value from the card you will have to have turns where you are just about unable to play anything.  I imagine a card like this being amazing in fatigue decks while being useless in matches against face decks where you really already lost if you are not squeezing value out of your deck every step of the way.

To explain how the card works its a bit like a combination of Bolvar and Flamewaker.  At the end of each turn that this card is in your hand it gains damage equal to the number of mana crystals you have left and when finally played the card pings 1 damage at a time equal to the number of unspent mana you accumulated from each turn.

What is interesting about this card is the fact that it basically rewards you for having turns where you were unable to do anything but still live long enough for the card to see play.  I imagine a card like this would see the most play in Priest decks and perhaps Warrior.

Destroyer of Worlds

Fits his theme of being a blind dragon that would destroy people when they would fill up their sound bars.  What could possibly fill it up faster than a Battlecry :D?

*note* the battlecry would go off and then the monster would be destroyed.