As the time passes and we get more in-depth into the season, the big players have already advanced to superior leagues. This leaves us the possible to have weaker enemies in the lower leagues (including gold 3) and this way we can get some rewards to make it worth.
Keeping coming day after day, today I had quite a good cards reveal and I succeeded to get 5 RARE monsters out of 6. Nice draw, hopefully it will keep up in the future. Cheers and don't loose hope!