I'm irked by the misuse of the word "fey."
Fey is an adjective, not a noun - someone can be fey ("Having or displaying an otherworldly, magical, or fairylike aspect or quality; having visionary power - clairvoyant; appearing touched or crazy, as if under a spell; fated to die soon (Scots.); full of the sense of approaching death") but something cannot be a fey.
"A fairy or an elf" is a fay, which means that a fay can be fey.
Dang, now I'm ticked off from thinking about it - I need to send a letter to WotC (pronounced "whacked," by the way) and ask them to stop abusing the English language, or to at least hire editors that speak it.
Grrrr. :\