So, you get 100 energy at max "free" a day, and it costs 10 points to go down a level, but the maximum depth is much deeper than the 10 levels that would allow... so how do you go lower than 10?
Is it something to do with tiers, and using 100 energy from multiple days to gradually go deeper? something else? or is it actually a way to force you to buy crystal energy?
You can earn crown and buy ec to cover for the extra distance that mist fails to cover.
Or spare a few pocket change is good too.