Can we please have a way to upgrade current 3*s to 4*s or a way to trade heros within alliance
I have been maxed out for quite sometime and continue to get all dupes when opening 4* and below crystals. It has become pretty frustrating and the game has become pretty stagnant due to this. Isn't there another way like trading in 3* plus x amount of units etc.. to upgrade to 4*? A trade stone that allows members in an alliance to trade heros?
Thx