beastytee: Very nice update! But here's and idea
Allow us to upgrade energy limit using arena gold
Ex. Energy 20/20 upgrade +2 cost: 200 per point and reduce wait time to 2mins
16-09-28 18:50
dreamer: There might be. 
Will check how the updates are doing first - it might be enough. A better solution would be allowing to pay in Arena gold for Challenge mode too! 16-09-28 18:44