Choices related to your calling are not irrevocable.
Prerequisite: Human, a chosen class ability that is a permanent choice.
Benefit: Once per day after an hour of meditation you exchange a chosen class ability for another that could have been chosen instead (eg. a rogue could exchange fast stealth for ledge walker, or a paladin could switch out a mercy)
Special: If a special ability has a limited number of uses and you currently do not have any uses of that ability remaining, the attempt fails to replace that class ability. Abilities that scale with level, such as arcane bond, bloodlines, divine bond, domains, and nature’s bond are not eligible for use with this feat (GM adjudication).