What deck do you use? I used to play savage roar but switched it out for a more standard deck (http://www.hearthpwn.com/decks/706870-budget-jade-druid plus druid of the claw).
On another note, I can't remember the last time I had Mage show up as an option in Arena.
That is more or less the deck, but no moonfire, growth, ooze. Instead have brann, Aya, one idol, one roar or two weather permitting, one ancient of war and fandral. Ancient or fandral could be subbed out for that second roar I believe. It's hard to get rid of the war when pirate is a thing though.
Edit golden lunar visions. Not bad considering I had none and it's more of a one off anyways.