Nice question, Warrior! ;)

Here are some considerations regarding energy:

  • You start the battle with 5 energy and gain 1 energy every 2.8 seconds.
  • Every card in the game with the exception of Generals cost a specific amount of energy which is specified on the corner of the card.
  • Every time you deploy a card, your energy is depleted. You can only deploy a card when you have enough energy to deploy it.
  • You have a maximum capacity of 10 energies to be held at once, so don't forget to use your cards to optimize your resources!
  • After 60 seconds of gameplay, the battle will become more intense because energy production will speed up, creating 1 energy every 1.4 seconds.
  • If the battle is even (same number of destroyed defense buildings) after 2m30s, Overtime begins. During the Overtime, the game automatically attacks the defense units and the player whose building is destroyed first loses the battle.
Electrifying, isn't it?

See you on the battlefield! ;)
Over.