Tome of Berserker III

Effect
Use into Skills Master to learn skill Berserker III: increases the Critical Strike rate of this hero's units by 120 points. Can be used for hero with level 50 or higher and speciality Attack.

Obtain
It can be found in:
 * (25 gold).
 * Wheel of Fortune.
 * Purgatory Abyss Layer.
 * Purgatory Abyss Layer.