Hearthpwn

This is pretty good but I think it's a mistake to not include Infest, especially since you have Unleash the Hounds in the deck. Personally I would probably take out the Candleshot and either a Cat Trick, Wandering Monster or the Explosive Trap so that you can put in double Infest. It's hard to say which secret to take out since they are all pretty good. In my opinion the Unleash the Hounds + Infest combo is good enough by itself to make it an auto include since you're basically filling your hand with minions that you sorely need.

I am not sure if you need Infest in the deck. The dog + infest combo does not see any play in constructed but I could see that being useful in the deck due to its lack of minions. It does still have lots of cards that summon minions but the infest value would also be good. The deck already has a value card in Rexxar but a backup is always nice.