Serpent Sibyl

The Serpent Sibyl is a half-fiend yuan-ti; hero unit that wanders the lands, leading scalykind in her endeavours.
The Serpent Sibyl has a 14-foot-long, snakelikebody covered with thick black scales. Four humanoid arms, alsocovered in scales, protrude from her body below the neck. Sheuses two arms for spellcasting and wields a massive spiked chainin the other two. Two great leathery wings, like those of a pterodactyl,sprout from her back near her shoulders. Her eyes glowred with malevolence.
==Sibyl's Megalomania==
The offspring of a yuan-ti abomination and a marilith demon,the Serpent Sibyl believes herself to be a reincarnation of Sseth,the avatar who ruled Serpentes a thousand years ago. Her followersbelieve so, too.Though the Serpent Sibyl is coldly arrogant, cruel, and despotic,she has the ability to inspire her followers—stirring themwith glowing descriptions of their ancient empires and spurringthem on to regain that lost glory. She also believes wholeheartedlyin that vision and imagines herself ruling a new, granderyuan-ti empire for centuries, just as Sseth did.The presence of Sseth overwhelmed the Serpent Sibyl'smind during the Time of Troubles and left her with imperfect
memories of what occurred. She recalls a feeling of great personalmight when she looked down on the Pit of Vipers (see Serpentesin Chapter 7) from high above the Lapal Sea, and she alsoremembers using that power to battle a great-jawed reptile thatwas afire with divine power. Some yuan-ti have told her that shebattled Ubtao, who had taken the form of a great, carnivorouslizard, and she is eager to accept that explanation. But whateverthe truth of what befell her in the Time of Troubles,the Serpent Sibyl knows that during that darktime, Sseth possessed her and used her as hisavatar. Because that possessionstrengthened her body ratherthan rending or withering it,she knows that she could serve asSseth Reborn at any time—andthe past history of Serpentesmight well be repeated.