Seething Frenzy
Your eidolon's fury boils over into a reckless, out-of-control frenzy. While frenzied, your eidolon is affected by boost eidolon and gains temporary Hit Points equal to your level, but it takes a -2 penalty to AC. Your eidolon can't voluntarily end the frenzy or start another frenzy while in the frenzy.
The frenzy lasts for 1 minute, after which it's Fatigued for 1 minute and can't start another frenzy for 1 minute.
Traits
An action with this trait requires a degree of mental concentration and discipline.
A creature with this trait is a summoner's eidolon. An item with this trait can be worn by an eidolon. An eidolon can have up to two items invested.
This effect alters a creature's emotions. Effects with this trait always have the mental trait as well. Creatures with special training or that have mechanical or artificial intelligence are immune to emotion effects.
A mental effect can alter the target's mind. It has no effect on an object or a mindless creature.