MapleStory Database › Items › Use items › Character Modification › Mastery Book › [Mastery Book] Bloody Prison 20
[Mastery Book] Bloody Prison 20
[Mastery Book] Bloody Prison 20 is a mastery book (character modification) in GMS v271. Sells to NPCs for 1 mesos.
70% chance of increasing the Master Level of to 20.
Job: Demon Avenger (4th)
Requirement: Skill Level 5+