Promotion is a process where a Pirate’s rarity (Star Value) is raised. The pirate’s maximum status value will also increase. Pirates can only be promoted up to a maximum of 6 stars.
Flow of the Evolution
1. When pirates reach the maximum level of their current rank, they can be promoted at the Training Grounds. To promote a pirate, you’ll need to sacrifice other pirate of the same rarity to it. You can also use Parrots of the same rarity as well instead of pirates.
Note: 5 Star Pirates would need 5 pieces of 5 Star rating Pirate or 5 star Parrots, 4 Stars Pirates would need 4 pieces of 4 star pirates or 4 star parrot and so on.
2. When you combine pirates who will aid in the Promotion process, the increase to your pirate's status value after the evolution process will be displayed in green numbers.
3. After evolution, rarity and the maximum status value will increase, but the evolved pirate's level will revert back to 1. You will not be able to use skills that have been available at a higher status level, but will be unlocked when you reach the required level again.