Well I used to do a lot of arena. I think I'm at 160+ wins. I only had basic deck and in my mind, I thought that in arena, everyone has the same cards, so I wouldn't be at a disadvantage because of not having cards in my collection. Well I got to 12 wins one time. It was a mage. I think it was like 12-1 as well. However I went 0-3 and 3-3 most of the time. Was it worth it? no. Better to buy packs from store for irl money then using irl money to pay for arena.