That's a lot of cards! I am trying to play a bit less and am doing free leases to some small accounts so I cannot really play. I am reluctant to invest a lot of money in the game and I would have to if I want to get any higher in the leagues. Silver I is about my limit. I have made use of the DEC to buy some votes, but have not got into orbs and potions. It takes forever to get enough DEC for those at my level.
Did you start a guild? I am not even sure what that does.