
Fuzzy-Wuzzy |

Most traits don't have mechanics directly hanging off them but are involved in other mechanics. For instance, some creature might prefer to eat fey creatures and get a +1 on attack rolls against anything with the fey trait. But these aren't compiled anywhere AFAIK. :-/
You can look up the trait in the Bestiary appendix, which will helpfully tell you that "creatures of the First World are called fey" and nothing else.

teetlebeetle |
Most traits don't have mechanics directly hanging off them but are involved in other mechanics. For instance, some creature might prefer to eat fey creatures and get a +1 on attack rolls against anything with the fey trait. But these aren't compiled anywhere AFAIK. :-/
You can look up the trait in the Bestiary appendix, which will helpfully tell you that "creatures of the First World are called fey" and nothing else.
Ah I see. Thanks for the response. Yeah I guess I was hoping for something more juicy like: “fey have weakness cold iron 5, +2 against illusory magic ... etc.” haha I guess that is what home brewin’ is for.

Fuzzy-Wuzzy |

Well, for some traits the Bestiary will say something like "Most fey have darkvision and a weakness to cold iron," but Fey is not one of them.
You can look up Fey on the Archives of Nethys under "Creature Type Traits." That will give you a listing of all the creatures out so far that have the trait, if you want to see what they have in common. Useful for homebrew.
Note that the idea is that your character is just touched by the First World, so even if most fey did have a weakness to cold iron you wouldn't get it (short of homebrewing). But you smell fey to any critters that can smell that sort of thing. :)

graystone |

Yeah, things can have an effect vs fey like a Blood Ward can be set to guard against Fey or Fey Fellowship grants a +2 circumstance bonus to both Perception checks and saving throws against Fey. It also allows someone to Recall Knowledge on you with Nature and Commune with Nature can find your location.