Sibyl

Sibyl is a half-fiend yuan-ti abomination who was an avatar of Sseth during the Time of Troubles, who wanted to become a god. Sibyl has four arms and a set of wings which is unusual for common yuan-ti. She is ink black with clawed hands.

Magical Abilities
Sibyl was proficient - much more so than normal yuan-ti - in the fear spell.

Worshippers
Sibyl is worshipped by the Se'sehen tribe which lives in South Faerûn and is also worshipped by Medusanna of House Mhairdaul.