Unstable Portal is 2 mana spell that basically draws you another card. Your deck is full of it, and you have to choose the last 6 cards.
Why not making it all even then?

Long story short, the deck concept resembles the idea behind Wild (and former Standard) Even Warlock, which exploits card draw, hand size and life total in order to drop big minions for a reduced cost.

The deck performs quite well, since aggressive decks (which are the most like in every other Brawl) play right into your gameplan.

I'm thinking about swapping Mountain Giant for Siphon Soul or Defile, so if you don't have it or you don't feel it fits very well, just make the change.