Don't try to be too greedy with Brann Bronzebeard and Fandral Staghelm, you don't necessarily need to get anything out of their triggers for this deck to be successful. If it happens in the natural flow of the game then it just makes a win that much easier. The goal is to trade wisely, heal when appropriate, go face when you have board control, and finish with N'Zoth, the Corruptor
Obviously, this deck can at times be susceptible to aggro/zoo decks.
Made some adjustments to speed it up a little and help against aggro: