That sounds interesting. I guess I should start working on the fay, huh.
just woke up, so it'll take a while. Done.
Faeries. The Fair Folk. Fey. They have always been here, hiding in the shadows, doing what they wished from their halls in their world, also known as Faerie. All those stories you heard about them helping people out of the kindness of their hearts? Those were mostly fabricated by them. In the few of them that actually happened, they were summoned and paid in full for their services.
They cannot lie, which, paradoxically, makes it easier for them to beguile people. They are masters of making it sound like their words are something they are not, having honed their skills over thousands of years. They are the merchants of the shadow world, trading magic and secrets, and occasionally mortal objects captured by the changelings, to the highest bidder. They also deal with mortals, and give them power. But as for all things which deal with these folk, there is a price. Blood is a common cost, and the occasional sacrifice. It long ago became the custom, for large donations, to take the recipiant's firstborn as a price. Thus were the Changelings formed.
The changlings are the faerie army and assassins. Humans, taken as babys or small children, and raised by the faeries, who teach them warfare, stealth, and, peculiar in this respect, as they themselves pay no price for it, Magic. They are the Shadow worlds enforcers, hunting down those who reneg on deals. Occasionally, they are even sent after those who abandon them, though this is rare.
The Fay feel only a single emotion. Boredom. Recently, this has changed. A new emotion, fueled by a single fact: Something has entered the world. Something powerful, and they do not know what it is. This new emotion? Fear.