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

Fighting Horn

FEAT 5

Prerequisites Puncturing Horn or xyloshi

You can modify the size and shape of your horn over time using your mental powers. Choose two of the following weapon traits: disarm, grapple, shove, and trip. Your horn gains the chosen traits.

Special You can take this feat a second time, adding the traits you didn't choose when you first took it.

Pathfinder Lost Omens Impossible LandsOGL