Yochlol A yochlol was a type of lesser tanar ' ri demon that served as " handmaidens " to Lolth , the drow goddess of chaos . Description . Yochlols had four forms available to them : humanoid , spider , ooze , and gaseous . In their natural form they appeared as a six - foot - tall , eight - tentacled blob of melted wax that continually emitted a foul stench . They also had the power to change their shape — usually to a comely drow female ( although other elves and human s were also possible ) or to a large spider . They could also change into a gaseous form , allowing their unknowing victims to inhale them , and then suffocate . All forms were immune to poison and electricity . Personality . Like all tanar ' ri , yochlols were chaotic evil creatures . They relished dominating other creatures . They were cruel and enjoyed a good battle . Summoned yochlols were compelled to faithfully serve one deed to their summoner , but they took special delight in escaping the control of those who summoned them and wandering about free about the Prime Material Plane , causing chaos . Yochlols used various forms as disguises to carry out cunning ploys and evil subterfuges to turn beings to chaos and evil ( or , occasionally , to randomly provide acts of kindness to mortals ) . Unless enemies of Lolth were present , yochlols did not engage in killing sprees or frenzies of mindless violence . Yochlol often hissed , whispered , or screamed when in combat , even telling their opponents their names , so that should the victim escape , he or she would fear the return of the yochlol . Combat . Yochlols had psionic abilities that allowed them to " dominate " others and read their thoughts . In spider form , they had a poisonous bite . Society . The yochlols ' natural home was the Demonweb Pits . Only high priestesses of the Queen of Spiders were told how to summon a yochlol to the Prime Material Plane . They were only supposed to be called upon in dire need or to witness sacrifices in the name of their dark goddess . All yochlol served Lolth and worked surprisingly well together . One yochlol would never betray , endanger , or attack another . All yochlols shared a telepathic bond with each other and Lolth herself . Yochlols were also used as a channel of communication to and from the Abyss . Lolth used yochlols to spy on the drow and ensure they were worshiping her properly . History . Lloth created the yochlol from succubi that she captured from layers of the Abyss . She never revealed how she transformed the succubi into yochlols , but when the process was completed , the yochlol remembered nothing of its former life and was completely loyal to their new mistress . A yochlol was the one to tell the drow to settle Menzoberranzan . In 1357 DR , during the attack of the drow on Mithral Hall , a yochlol was summoned to aid in the battle . In order to defeat the creature , Wulfgar collapsed the cavern ceiling upon the yochlol and himself . Wulfgar was believed dead by his friends , but in reality he had been taken back to the Abyss by the yochlol and became a slave to the balor Errtu . Quenthel Baenre existed as a yochlol between her death in 1358 DR and resurrection in 1361 DR . A yochlol guarded the infant Yvonnel Baenre II in 1486 DR , at one point saving her life from her mother , Minolin Fey Baenre . Uses . Yochlol essence ( made from heating part of its gaseous form or boiling down part of its physical form ) was used in spell inks and castings related to abilities of yochlols , such as " shapechange " and " stinking cloud " .