Exchange remaining low-quality pieces to pieces of a higher quality by using gold coins. This means: upgrading Lords without waiting for the next event. You can find this action in the lords view.
Gold costs
Each upgrade actions cost 25 gold coins.
Exchange rates
- You need 5 common pieces to receive 1 rare piece.
- 10 rare pieces to receive 1 epic piece.
- 15 epic pieces to receive 1 legendary piece.