From Pathfinder Lost Omens Impossible Lands, which isn't enabled.

Fangs (Nagaji)

ANCESTRY FEATURE

Your mouth contains either rows of hooked, needle-sharp teeth or a pair of vicious serpent fangs. You gain a fangs unarmed attack that deals 1d6 piercing damage. Your fangs are in the brawling group and have the finesse and unarmed traits.

Pathfinder Lost Omens Impossible LandsOGL