I've been playing hearthstone probably about once per day for over two years, and today I finally won the arena. You get 3 losses maximum and the goal is to build your deck (similar to drafting in magic) and win 12 games against other people.
Today I built a nasty warlock deck and went 8 wins before even losing a single game. The last game was a blowout 5hey other guy had no chance!
Steepshot