Stages on Sky Arena are set by algorithm in order to guarantee it can be played long-term. Here are some suggestions for making your team more competitive in the Sky Arena: 

1.Collect more heroes, make more battle formations, and deepen your back-up options.

2.Evolve and promote your heroes and enchant their armours. 

3.Appy more strategies, which can be learned from training ground, to make full use of the heroes ’characteristics.