Interactions with the Fae and Sidhe
Always and as politely as possible, refuse the gifts of the Fae. Such gifts always lead to trouble of some variety, and the acceptance of a gift always creates an obligation or requirement for payment.
The Fae do not necessary feel the need to disclose beforehand that acceptance of a gift will result in an obligation since it should be obvious to all sentient creatures that accepting a gift obliges the receiver to offer something equal or greater value in return.
Obligations may not simply extend to yourself (including your body, mind, heart, or soul) but also to your friends and family (and their bodies, minds, hearts, and souls).
Theft is only theft if you get caught. It is the owner’s responsibility to ensure their possessions are not stolen. It is a thief’s responsibility not to get caught.
Be careful when traveling the lands of the faerie, as often food will be offered as a gift. Also, such food though it may look delicious, may be particularly distasteful should you know what it is in fact made of. When traveling the lands of the Fae, it is also very important to watch what one eats beyond what is offered.
An oath once sworn is considered sacred. All who travel the Faerie Realm are expected to abide by their word once given. Breaking your word will lead to a feud against you and yours by all of Faerie.
All Fae must tell the truth and cannot lie though they can elect to not tell you the truth by omission or misdirection. It is rumoured that if a Fae is asked the same question three times then the exasperated creature will feel compelled to tell you what you want to know.
Killing a creature of the faerie lands not only will upset the creature itself (when it reforms), but also it’s lord or lady.
Drinking the water of particular streams, springs, or lakes has also been known to bind one to the lord or lady of that particular body of water.
In general, when traveling in the lands of the Faerie, never venture without a trustworthy personal guide (with whom a binding agreement of loyalty has been made) and always, always, always pack plenty of your own food for consumption or be prepared to offer a price that cannot be refused.
Never tarry too long in the Faerie Realms for time runs differently here.
Faerie music is often bewitching and should be avoided. Also avoid playing music when in the Faerie Realm as the Fae highly value a mortal’s ability to play and may covet enslaving the player.
Finally, be careful when wooing a member of the Faerie Courts to be your lover. Many of Faerie kind are cursed (or alternately, blessed) with powerful Fae magic’s they may not even be aware of themselves. A beautiful maiden may often truly be the most hideous hag, and vice versa. The Fae are surrounded by various glamours, spells which conceal the truth.
Especially in matters of the heart (for some reason, the Fae seem to think games of love to be the most entertaining), things are seldom just what they seem. Though not always possible, do your best to remain aloof to the allures of the Fae. If you find your heart has been stolen by one of the Faerie Courts, do your best to remain true to your love, for that is the only tried and true method to survive such a life-threatening ordeal intact.
The ‘unwritten’ rules of the Goblin Market
No Violence. Goblin merchants won’t be intimidated, and they won’t tolerate people trying to injure them or their customers within the market. That is bad for business.
No Stealing. Goods represent part of a seller’s life and theft is seen as a form of assault on its owner and treated accordingly.
You Get What’s Advertised. If a merchant tells you that a spike has the power to kill someone when it’s driven into its victim’s shadow, it has that power. It may have other side effects, mind, and the method of death may be something unexpected, at a time of it’s own choosing or in some other way inconvenient — but you get what’s advertised. Note, though, that there is no requirement for a merchant to advertise all the properties or catches to his wares, and there never will be.
Honour Your Deals. This cuts both ways. A merchant must provide the wares promised, and the customer must provide payment. Defaulting on a deal is more than just bad form it is a form of breaking your oath (see above).
No Refunds. If you regret trading away something, you’d better find something the merchant really wants in order to buy it back — at an inflated rate, most likely and that’s a brand-new deal.
Superhero Adventures, UK Style 