Board Thread:Questions and Answers/@comment-33532122-20180504160111/@comment-33489892-20180509093424

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.