I would take out a forest spirit, and add a quintessance, and swap the rage potion for a deflag, to stop rush stoping cards - EG - procrastionations, ice sheilds and phase sheilds.
I would also swap the heal, and a nova for 2 precrogs to speed the deck up a bit and give it a bit more umpth. 2 precogs means that he deck is basicly 28 cards rather than 30.
Adding a momentum somewhere would also counteract sheilds.
Contrarily, this deck is still decent.