You can participate in Airship Trial earn materials and gold

1.Partcipate in the Airship Trial to earn materials to upgrade your heroes and eouipment when reach commander's level 25

2.Every day,players have two chances to each type of trial.Number of chances will be decreased after vicory

3.Upgrading your Commander level unlocks tougher challenges and therefore,larger rewards

4.Higher VIP level can acquire more challenge attempts