Vestigial Vigor

Whether due to genetics or carefully targeted exercises, your vestigial arms are especially strong.

Vestigial arms species trait.

You can combine the use of your vestigial arms to perform any one-handed task, including making attacks and using items. However, your reach with any weapons wielded by your vestigial arms is reduced by 5 feet.

If you have at least four vestigial arms, you can take this feat a second time. If you do, your vestigial arms can be used as if they were two hands, each requiring the dedicated use of half your vestigial arms.