MapleStory Database › Items › Use items › Character Modification › Mastery Book › [Mastery Book] Boomerang Step 20
[Mastery Book] Boomerang Step 20
[Mastery Book] Boomerang Step 20 is a mastery book (character modification) in GMS v271. Sells to NPCs for 1 mesos.
100% chance of increasing the Master Level of to 20.
Job: Shadower
Condition: Skill Level 5+