Draconic hunter

Firetree Witchdoctor can give you an early minion and a spell for later on depending what kinda deck you are facing.

Scalerider is always good pick and gives you nice advantage at early game and really good turn 3 card.

Since deck uses good amount of discover mechanic at the early game you get hand card refund back before turn 4 which makes twilight drake keep its value really well.

Stormhammer is the jewel of this deck, if you can get this on the board and keep it there, you will have a very good upper hand against your opponent, having 3dmg weapon + hero power every turn to face is quite good.

Since the deck lacks taunts, you need to use spell to your advantage to handle the board early game and hopefully find more answers with discover mechanic, i would only add "bloodscalp strategist" here if you have "stormhammer" in your mulligan, if not then its better to pick primordial explorer cuz of poisonous and find more answers like "dragonmaw scorcher" to deal with low health minions. still thinking if replacing some cards with "dragonmaw scorcher" would be a good idea in the deck.