SFS Standard Coral Fists Feat 1

Source Galactic Ancestries pg. 102
You've grown especially sturdy fists. Your fist unarmed attacks no longer have the nonlethal trait and gain the shove trait.

Traits

Copaxi:A creature with this trait is a member of the copaxi ancestry. They are a colony of genetically identical polyps with a humanoid form and coral-like exoskeleton who can manipulate gravity. An ability with this trait can be used or selected only by copaxis.