Hello @blog-beginner, I just checked your collection and I saw that you have a nice cards there, you're summoner is at the higher level than mine but some of your monsters are a bit left behind, but I think in your current cards you can manage to go into champ 2.

And in my personal experience having a balanced cards in many splinter can give you advantage, because some of the players only focused on 1 or 2 splinter so everytime that their major splinter is not usable in a battle thay end up using low level cards or just surrendering..