The Vistani swear these desperate and bitter creatures are the descendants of a cursed pixie clan captured by the mists of Ravenloft for the unspeakable arts they committed in a distant land. They are cruel creatures who take their greatest pleasure from the suffering of the weak and helpless.
The baobhan sith (or black sprites) stand two feet tall and have large transparent wings like those of a cicada. They have sharp elven features with long, almost bat-like ears. Even druids have difficulty distinguishing the baobhan sith from pixies, and it is only the dull luster of their wings and their distinctive ears that identify them. They favor garish clothing and wear colorful caps.
The baobhan sith speak common and it is believed that they may also know the languages of other sprites and woodland animals.