Echoing Violence [free-action] Feat 18Archetype Death Incapacitation Source Tian Xia Character Guide pg. 121Trigger You critically succeed with an unarmed
Strike against an opponent.
Your powerful attack causes damage that reverberates through your opponent’s body, shaking muscle from bone. The creature takes 10d6 bludgeoning damage with a basic Fortitude save against your class DC. If it critically fails, it immediately dies as your blow tears apart its body internally.
Traits
Archetype: This feat belongs to an archetype.
Death: An effect with the death trait kills you immediately if it reduces you to 0 HP. Some death effects can bring you closer to death or slay you outright without reducing you to 0 HP.
Incapacitation: An ability with this trait can take a character completely out of the fight or even kill them, and it’s harder to use on a more powerful character. If a spell has the incapacitation trait, any creature of more than twice the spell’s rank treats the result of their check to prevent being incapacitated by the spell as one degree of success better, or the result of any check the spellcaster made to incapacitate them as one degree of success worse. If any other effect has the incapacitation trait, a creature of higher level than the item, creature, or hazard generating the effect gains the same benefits.