I've been trying to search for the solution to refill energy, but I can't.
In games like this, I like to grind. And with this Energy limitation, it's really not my kind of game. I like this game because I'm using a Mac. Anyway, aside form purchasing energy, are there any other ways of refilling it?
I heard about the mist tanks, but I can't seem to get 1. Any idea how?
Your options are these:
1. Wait just a little under 24 hours to refill your mist energy.
2. Buy energy with real life cash.
3. Buy energy with crowns from other players.
That's it. You get mist tanks from a couple of quests. One for completing the tutorial area, one for making it into tier2, etc. You will have to do the dungeon, sell the materials you find on the auction house and by more energy from players if you don't wish to spend any real cash.
Don't buy any 1-star gear. Go straight for 2-star gear so that you can get into tier2 as quickly as possible. From there you will make way more crowns and can better afford to sustain buying more energy.