Hearthpwn

This deck won on heroic. It might take a couple plays to get the rhythm of the game. It's a little tricky trying to find the balance between when to attack Vaelastrasz and when to attack the minions. I'd recommend not using Hunter's Mark on anything with 2 health (for obvious reasons). Try to keep beasts on the table for as long as possible if you have any Timber Wolfs around still. Try to be efficient with dealing damage and playing cards. Only use your hero power when you can't strategically play anything else. Keep in mind that you have only about 10 turns max. Explosive trap is great esp when the demons get cast, but its also good just to bring down 4 or 6 health minions to something more reasonable. Keep in mind that Vaelastrasz has a bunch of no-cost damage cards. Have fun.