Liistra

One of Lolth's Yochlol who was placed in service of the matrons of the great houses of Siglagthil. She spend several decades at Driel Triranadal's court as advisor for the matron mother since her house rose to the 8th rank.
Liistra was also presnet during Triranadal's ascension to the rank of 6th house in 440 YoU. The yochlol didn't show any displeasure with the matron mother even though she order the attack on the house of Dulaenthan during the Night of Graduation - a sacred holiday for all drow when violence against other houses is forbidden. Liistra observed Driel's daughters in how they dealt with Lolth ignoring their prayers, while Driel herself had kept her powers in a twist by the goddess whims.
A few days later the house Triranadal ended up on the receiving end of a house assassination as the Xorrbin famliy attempted to rise from 9th to 8th. Driel continued to be confident that even as she broke Lolth's sacred law the sign of Liistra still was present at her court as well as herself being able to cast divine magic was proof enough that Lolth didn't punish her, contrary to her daughters for they lackied faith - a notion that Liistra again didn't challenge. Yet when Aradel, Lui'ysh and Daresh attacked the matron Liistra only observed and disappeared with a smile as the matron was killed.
From that night on Liistra appeared at Bhael Xorrbin's court to symbolise Lolth's appreciation for the new memeber of the council of matrons of Siglagthil.