Fey Contracts

Making a deal with a Fey of the Courts can be beneficial, but is almost always dangerous. If you knowingly go against the terms of the agreement you take 10d6 psychic damage, although it's never fatal no matter how much damage you take, and you lose the use of any boons granted from the pact.    

Fey Boons   

Examples: the use of special magic items, the use of some spells, special physical benefits (water breathing, see invisible, etc.)