The ingame help reads:
Skill duration: 2. Type of skill : offensive skill. Party rows : 1st. Affecting stats: Str/Dex. It uses 22 endurance points. One of the most fearsome capabilities of the servants of chaos is the possibility to attack in a chaotic frenzy, being literally claws and teeth, against your enemies. Some say that only a servant of chaos, assuming the form of a chaotic abomination, can use this skill to its full extent.