Since you are working, if you want to play more buy the skystone / leif pack. It will give you much more than free energy daily. If you don't want to pay for playing then just play with all resources you have (maybe sacrificing your skystone to summon for energy instead)

I suggest you buy a monthly pack that give you energy everyday, it doesnt cost much anyway

How much money a person going to spend for lief today package? The energy in this game really very insufficient... and the process of leveling and grinding really consume lot of time.

nah,i'd rather save for a black shark 2 phone haha,just deleted my account 2 days ago,don't have much nat 5* units and no ML 5* hero at all even after compensation of galaxy/mystic bm,been fun playing for 7-8month tho xD,got bored of using low tier heroes with no ml/nat 5* units can't progress much,its either you get less 5* with op rolls on gear upgrades or a lot of 5* units but trashy rolls on gear upgrades...thats how i see it these past 7-8 month of playing :D