There are two ways of charging the Grail:
- Attack another clan. If you win, you get some of the energy from your opponent clan’s Grail. If you lose, your Grail’s energy remains the same. To issue a challenge to another clan, tap Select Opponent on the Grail home screen.
- Sacrifice objects. All players can convert game objects into Grail energy. You can convert items, scrolls, boosters and books.
Read more: How do you sacrifice game objects to charge the Grail?
Note! The level 1 Grail is charged automatically within 72 hours. This only happens once. Once the level 1 Grail is at 100% charge for the first time, players can charge the Grail only in the two ways described above.