Undying Temple The Undying Temple was a living temple dedicated to Kiaransalee in Castle Maerimydra . It was summoned by Irae T ' sarran during the Silence of Lolth . Location . Located inside an enormous stalactite just beside the southern column of Castle Maerimydra in Maerimydra , the Undying Temple was reached via a small bridge in the top level of the Castle ' s Lesser Tower . Structure . Exterior . The Undying Temple appeared as a tower of ribbed black stone that curved gracefully up to a point . The structure curved around an enormous floating orb of negative energy that absorbed all light around it . Another identical spiraling tower mirrored the first , albeit on the ethereal plane , and hung upside down so that both towers cradled the gigantic sphere . Interior . Inside the Undying Temple , the temple was formed of numerous chambers , each laced with an almost imperceptible magic al circuitry that allowed the consciousness of the temple to manifest and see inside those rooms . In addition , all the doors blended almost completely with the surrounding stonework , making them difficult to locate for those unfamiliar with the layout . The same ribbed and organic architecture that was found outside was also present inside the temple . Abilities . As a sentient creature , the Undying Temple was unlike most other structures ; it was able to plan and co - ordinate its own defenses so that it could take a pro - active role in protecting itself and the denizens within . Merely passing into the stalactite cavern where the Undying Temple was located rendered intruders subject to its telepathic and blindsight senses , making it almost impossible to sneak into the temple . Once the Undying Temple had noticed nearby creatures , it generally employed its powers to divine their intentions . If necessary , the temple would attempt to " dominate " dangerous warriors whilst summoning and warning the other defenders inside the Undying Temple . Combining the traits of both a construct and the undead , the Undying Temple was immune to most attacks that would harm a living creature and its magically enhanced walls were even resistant to attacks like " disintegrate " . Additionally , it was healed by negative energy , but despite these robust features it was susceptible to harm by positive energy . Entering the Undying Temple was hampered by the fact that the only way to physically enter was either through the enormous orb of negative energy that floated some 30 ft ( 9 . 1 m ) up the temple or by the temple itself creating an archway for entry . As there was no pre - existing doorway , the Undying Temple normally created one to admit creatures . However , in the case of intruders , the temple would make a show of luring enemies inside itself for its defenders to deal with and where it could use the rest of its powers to their fullest advantage . Once inside , the Undying Temple would make careful use of its powers to assist its defenders and telepathically monitored the movements of intruders . Despite this , the drow defenders rarely co - ordinated or were pro - active in their defensive attempts ; instead , they relied on the warning of the Undying Temple to catch intruders . The central orb of negative energy was linked with an orb wraith that defended it if attacked . Here the Undying Temple was particularly protective and would unleash its full magical repertoire , if need be , to aid the orb wraith in defending the orb . The only other area that the Undying Temple contributed so vociferously to its defense was in the Greater Temple upon the ethereal plane . This was where Irae T ' sarran conducted her spell research . History . In 1372 DR , on Marpenoth 17 , Irae T ' sarran cast a " miracle " spell to summon the Undying Temple to Castle Maerimydra . Irae then moved her operations in Maerimydra to the Undying Temple and continued her research into her " great revenance " spell under the watchful gaze of the Temple .