MapleStory Database › Items › Use items › Character Modification › Mastery Book › [Mastery Book] Ninja Ambush
[Mastery Book] Ninja Ambush
[Mastery Book] Ninja Ambush 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: 4th Thief, Wild Hunter
Condition: Skill Level: 5+