MapleStory Database › Items › Use items › Character Modification › Mastery Book › [Mastery Book] Slash Storm 20
[Mastery Book] Slash Storm 20
[Mastery Book] Slash Storm 20 is a mastery book (character modification) in GMS v271. Sells to NPCs for 1 mesos.
Advances the Master Level of up to 20 at a 50% rate.
Job: Blade Acolyte
Requirement: Skill Lv. 5 or above.