I started playing the second season and got as far as Silver I rating but then I fell to Silver II, I believe if I keep on playing I will go all the way down to Bronze because I have gotten to a stage where I only have 16 mana limit and all the battles I get into I lose.
So I will do the logical thing, stop playing and wait until the season ends, I don't want to lose all that I have gained and it seems the game will just not let me win. I think that the cards I have limits my progress so I will just see if I can collect some more high value cards.