Hearthpwn

So I've been playing a lot more of this deck (Hovering around Rank 1/2) and for most classes, I end up 50/50 or better. There are a couple decks that I just flat out lose to most of the time though, and I'm not really sure what I can do to make the matchups more even. Those decks namely are basically any Warlock deck (Giants or Rush) and the Warrior control deck with Shield Block. Warlock Rush decks with Shieldbearer, Voidwalker, and Defender of Argus in particular I've been having a lot of problems with. Anyone have any suggestions?

I've been messing around with a variant of this deck that uses Sword of Justice, and I've been seeing good results, but I'm starting to plateau and have a couple of questions:

1. How necessary is the second Divine Favor? I rarely find myself in a situation where I need to use two Divine Favors. The first Divine Favor will usually yield a large number of cards, and then the second one will be dead weight for a while until it ends up usually as being an Arcane Intellect. I take it that the usefulness of that one Divine Favor warrants carrying two just for the increased chance of drawing it?

2. How do people feel about Consecration? I've been having a lot of problems with decks that have a lot of minions and I don't really know how else to deal with them besides running a Consecration. Is the AoE damage worth it, or should I be looking to something else instead?