MapleStory Database › Items › Use items › Character Modification › Mastery Book › [Mastery Book] Hero's Will 30
[Mastery Book] Hero's Will 30
[Mastery Book] Hero's Will 30 is a mastery book (character modification) in GMS v271.
50% chance of increasing the Master Level of to 30.
Job: Jett
Condition: Skill Level 15+