From Pathfinder Lost Omens The Mwangi Expanse, which isn't enabled.

Ceremony of Strengthened Hand

FEAT 9

Prerequisites Ceremony of the Evened Hand

Your exoskeleton's weapons are even more potent. If you have a claws unarmed attack, it gains the deadly d8 trait. If you have a branch unarmed attack, it gains the shove and trip traits.

Pathfinder Lost Omens The Mwangi ExpanseOGL