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

Skillful Climber

FEAT 5

You can scamper up or down surfaces as nimbly as a monkey. You gain a climb Speed of 10 feet. If you have the Climber's Tail ancestry feat, your total climb Speed increases to your land Speed when climbing trees.

Pathfinder Lost Omens Impossible LandsOGL