I got a real shit-heel Foltest deck, that while not perfect, has been winning games consistently.
Basically, it involves pumping up a Reinforced Trebuchet (does 2 damage every other turn at random) on the first turn. The idea is to goad the opponent into using like at least half their hand. When they end, I hopefully have a Reinforced Treb somewhere around 25+. Then, I use Adrenaline Rush to save it for next turn, dupe it with Foltest's ability, then Promote it so it can't be Scorched or Rained on. So I win the first turn, then I have two gold Trebs that do 4 damage every other turn to the enemy.
Obviously, the downfalls are if someone kills them early in the first round, then I have to try to pump up something else, but assuming I get Adrenaline Rush and Promo at the start (hasn't been much of a problem thus far), its been pretty solid.