Board Thread:Questions and Answers/@comment-33532122-20180504160111/@comment-34779323-20180509163446

Arteagaerik wrote: Also, I simply stored all my boxes from last season and then openned them once that season was over. So, I had 30 energy when I opened them and gained the 190 energy from all 19 boxes, which gave me 220 energy. Then, you factor in the energy gained from the fighter showcases and daily login rewards from that time till this season started, and boom. 400+ energy to hit the ground running and try to power through this season. I wouldn't have opened my previous season's boxes all at once before the start of this season. I think using the 10 energy stored in these boxes on active challenges is a much better strategy. Otherwise, if you open them all before the season starts, then most of it is wasted on bots.

I still haven't opened any of my previous season's boxes till now. I'll use them when I have active fights and 0 energy.