Skill Reroll System

Players can use a Skill Reroll to change one of their mercenary's skills to a random skill of the same or higher rarity. Each mercenary receives two skill rerolls upon reaching maximum level for the first time—one when they reach level 20, and another when they reach level 40.

Outside of these two free rerolls, players can only reroll a mercenary's skills by using the Skill Reroll Orbs, which are the most rare and valuable resource in the game.

Since a mercenary's potential strength is largely determined by the four randomly assigned skills they gain upon recruitment, skill rerolling is one of the few ways for players to strengthen their core lineup.