You can do this! We just got two people in my clan done with this Gold 4 mission after they were stuck in Gold 1 for a long time! We just went through their builds and made some tweaks, rebuilt a champ or two, and they were able to get into Gold 4 just this week!
Why don't you post your team and their builds in a new thread and we'll try and help with some recommendations?
The problem starts there, my champs just never ever gonna be as good as this teams. My best speed lead is High Khatun and she is %19. I never ever get first turn against this teams. I tried to have go second team but i dont have any go second champ other than Sandslashed survivor. I have no good reviver i dont have Scyl yet.
And doesnt matter how much i win , im getting smacked in arena defence and lose 300 points everyday because of enemy speed teams with Arbiter.For example in that photo its only 10 mins i lost 26 points. Its just dead end i just have to buy like 100 sacred shards to get a nice speed lead legendary/epic champ (like kymar) or i cant catch them.