Tome of Chaos Bringer IV

Effect
Use into Skills Master to learn skill Chaos Bringer IV: increases the Double Strike rate of this hero's units by 120 points. Can be used for hero with level 70 or higher and speciality Agility.

Obtain
It can be found in:
 * Wheel of Fortune.
 * Purgatory Abyss Layer.
 * Purgatory Abyss Layer.