Arena Gold
I made it into Gold last night. Once in Gold its too easy. The battles are 1 champ or disorganized teams.
For those of you struggling in Silver be patient. It takes some luck, hard work and a few months. The reward is worth the wait and effort.
@PlayerJ showed me how to build a defense team. I use it as my offense and defense team. Its an easy team to build even in early game. You upgrade as you get better gear and champs. I got good upgrade advice here on the forum. Everyone has speed nuke and its impossible to get enough speed unless you are end game. He has a long article about Arena here in the forum.