This was fun to create, and it’s a great way to look at how groups of monsters/creatures are designed.
For example, previous editions of D&D applied damage and spell resistances to fey unless the attack was from a cold iron weapon. In my opinion, damage resistances tend to slow down play, and unless part of a particularly powerful or iconic fey creature, isn’t actually necessary. Plus, if you were to be playing in a Fey heavy game, every adventurer would strive to have a cold iron or magical weapon, eventually rendering the resistances useless. In my opinion, it’s better to have this resistance show up less frequently than having literally every fey with a damage resistance. If it doesn’t mesh with your version of Fey creatures, it’s very easy to just tack it onto a creature.
Most Fey also tend have high Dexterity and Charisma attributes, amplifying their nimble and tricky reputation. Armor is rare, and there is a lot of innate casting.
Finally, there’s a common theme among fey creatures of “attractive woman lures men to their death.” I tried to avoid specifying in the book whether a creature was specifically masculine or feminine. Dryads are typically portrayed as feminine, but I had a really great game once featuring a male dryad that looked like Fabio. Most of the art in the book still features feminine fey in these roles, but I tried to avoid that in the written descriptions.
I hope you enjoy the book! Next up will be a Construct Compendium!