MapleStory Database › Items › Use items › Character Modification › Mastery Book › [Special Mastery Book] Arrow Stream 30
[Special Mastery Book] Arrow Stream 30
[Special Mastery Book] Arrow Stream 30 is a mastery book (character modification) in GMS v271. Sells to NPCs for 1 mesos.
100% chance of increasing the Master Level to 30.
Condition: Skill Level 5+