A mysterious curse of divine origin that affects some Al-Azaliyyan tribes. It allows a person to tap into some primal source of strength, but it also requires regular meditation to keep in check, lest the person loses themselves in the bloodlust and becomes uncontrollably violent.
According to legend, some people in ancient Al-Azaliyya committed a great sin, which was then punished by Ardia in the form of this curse.
Rage is not the same as frenzy, because it is possible to come back from rage.