Fae


 * There are two types of fae: those that are born, and those that are made. Those that are born are more powerful, eldritch in appearance: and far more capable in taking on glamours to masque their appearance. Those that are made are people who have lost their name. Both are essentially immortal: unless slaughtered by hunters, they will not die from old age or illness.
 * Changelings are all born fae: exchanged for human children and raised as such. The human children are sometimes eaten, other times kept in servitude. There are rare stories of their return. Changelings often seek out their fae heritage however, and it is not uncommon to see them in liminal places in the guise of humanity. Changelings raised by humans often prefer to assume the form of the child they replaced. They have more leeway in terms of how strictly they need to abide to the laws that govern the fae, (such as being able to choose whether or not to take a name if they overhear it in person) and typical wards have less effect on them, though are still painful or repulsive.
 * "Without lie, let, lien," is the only phrase that assures that a gift or favour has been given without the expectation of something in exchange. Most fae highly value manners and politeness: erring on the side of overly formal speech is a safe bet. Saying thank you is an acknowledgement of debt to the fae- and should be avoided. Instead, showing appreciation for a gift without saying thank you is safer.
 * The fae are incapable of lying. They are however, free to use trickery to their advantage: and lie by omission.
 * Classical wards apply to them: running water, salt, iron, rowan, St John's Warts flowers, and various sacred herbs. Sandalwood has a soporific effect on the fae. They can be appeased through traditional offerings such as bread and milk and honey.
 * Deal brokering - they are bound to obey the rules around the deal, and are capable of superhuman feats in exchanges. If a deal is broken, they will employ violence until they feel retribution has been paid. The fae are sly, and prone to striking up deals whenever the fancy strikes.
 * Taking a name - removing someone's sense of self, their identity: this name must be one that they truly identify with and feel like personifies them. It doesn't necessarily need to be a legal name, or even a given one: nicknames also count. It must be exchanged in person- written mediums don't count for the exchange. While it is possible to return a name: the longer the duration it has been separated, the more dire the consequences.