@bbalpert: Do quests. Earn entry fee for Arena in no time at all. Stockpile gold for Arena. Better than buying packs since it's 50 gold more and you're guaranteed a pack anyway. Doesn't take too long, I put in a few matches per day on average between all the big releases of the last few weeks (Titanfall Beta, Donkey Kong, South Park, Titanfall) and I have like 900 gold roughly. I could play the arena 6 times! Which is secret code for months at the rate I'm going. Mind you I've had some great streaks. Currently I've got a Rogue I drafted last week that's done 6 1. Real nice.
You're right, but it's just deflating to get stomped 3 times in a row like that, especially to dumb stuff like that.