Whats the best way to get enough energy to farm Dragon 20 a million times? I am ready to grind, grind.
- Daily quests - you get one free refill from completing the "do 5 arena fights"
- Weekly quests - you get two per every five days, one for ascending a champ, another for ranking one up to rank 4
- Advanced quests - you get one free refill per day for finishing all of them, and you get 50 energy for doing the daily arena / tag arena quest
- Login rewards - usually twice a month, you get a big chunk of energy just for logging in
- Doom Tower gives a whole bunch of free energy
- CvC gives quite a bit of free energy every two weeks
- You can buy refills for gems (though I don't recommend this unless you are really starved for things to do)
The first three are the biggest, most reliable source.