
Instead of defining them, they used them to define the part of nature they inhabit: if there are fey around, this grove must be old and magical and wondrous and possibly dangerous.

For the most part, they are portrayed as elusive and tricky creatures living in the wilderness. Official D&D publishers never explained fully what exactly fey are and how they work. "A fey is a creature with supernatural abilities and connections to nature or to some other force or place."

The word "All" is, of course, a wild exaggeration. The purpose of this Compendium is to compile All Things Fey (official and homebrew) in one place.

Relevant information is scattered all over the place, and a lot of things about them remain vague. Popular though they are, fey never got a Handbook of their own in D&D.
