MapleStory Database › Items › Use items › Character Modification › Mastery Book › [Special Mastery Book] ????2 30
[Special Mastery Book] ????2 30
[Special Mastery Book] ????2 30 is a mastery book (character modification) in GMS v271. Sells to NPCs for 1 mesos.
有100%的概率可以将的最高等级提高到20级。
职业：龙的传人
条件：技能5级以上