|1||1% chance of berserking each time you attack. Reduces chance of passing out afterwards to 3%.||You tend to lose your temper in combat.|
|2||Same, with a 3% chance of berserking and 2% chance of passing out.||You often lose your temper in combat.|
|3||Same, with a 9% chance of berserking and 1.5% chance of passing out.||You have an uncontrollable temper.|
Often referred to as "berserkitis", Clarity or "Near Starving" hunger negates this.
Formicids are exempt, because their stasis stops them from berserking.