Sylvan

Sylvan is the primary language used in the Feywilds. Contrary to popular belief, the fey are not the only ones to use this language. It is used in place of Common in the Feywilds. The language has an airy sound that sounds attractive to mortal races. Due to the fact that the fey cannot lie, many people will trust the word of those who speak in Sylvan, however the language itself does not prevent one from lying.
Sylvan uses the Elvish script, though it would be more accurate to say that Elvish uses the Sylvan script. Whichever way you look at it, the text is the same. However, many fey creatures will opt out of writing where elves love to write and are famous for their poetry.