Deep Duerra Deep Duerra ( " dwair " - uh ) , also known as Queen of the Invisible Art or the Axe Princess of Conquest , was the duergar demigod of psionics , conquest and expansion . Worshipers . Deep Duerra and her cleric s were known below the surface as " Norothor " ( " those who seized enemy lands " ) . While very few surfacers knew of the goddess and her faith , the Norothor were the talk of underground waystations and trading communities because of their recent efforts in the Underdark . Even the older duergar who served Laduguer considered the Norothor to be a nuisance , because of the strong degree in which they preached expansionism . Regardless , the Norothor served an important role in duergar society , since they trained the natural psionic abilities of young gray dwarves , they attended to and controlled the underclass of slaves , and they scouted and cleared out nearby tunnels so the community could continue to grow . Because of their focus on the mental disciplines they were often used as ambassadors to psionic races such as the illithid s and aboleth s . The brashness inherent of the faith however , ensured that many of these missions ended disastrously . Duerra ' s temples were constructed in symmetric patterns meant to be visually appealing , and they featured an empty seat at the center of the centermost room . This seat was called the Daul ' s Throne and served to remind the Norothor that Deep Duerra was always present and watching . Norothor frequently multiclass as fighter or as psion s . Rituals . Norothor prayed for spells at night . The Rallying . They celebrated a perverse festival known as the Rallying on Midwinter Eve . The clerics commemorated the triumphs of the past year that evening , and they announced their intentions of expansion for the coming year . Accompanied by the sound of hammering and war chants the Norothor passed around the freshly severed head of an enemy . This enemy was one whose territory they would take before the next Rallying . . The Melding . On the 5th of Mirtul , Norothor gathered in their temples for the Melding . This was a psionic ceremony where they contacted Duerra herself . The result was a communal mind which granted all clerics greater insight in their endless quest for power and territory . . History . In the stories of old duergar mindwardens , Duerra was the queen of a dark and immense subterranean dwarven empire in ancient times . In their expansionist wars , the queen herself stood in the front of her armies . On one campaign leading to the domination a huge illithid city . Duerra then ordered her men to capture the mind flayers , who were once slavemasters of the entire duergar race . After a century of work , Duerra and her surgeons succeeded in taking the psionic powers from the captive illithids and transferred it into her brood and her clan ' s bloodline . Mindflayers tell the story differently though , by claiming Duerra was the leader of a slave rebellion . They attribute the psionic powers of the gray dwarves as an invention of their own , used to create a more efficient slave stock . Regardless , many duergar honor Duerra as the progenitor of their psychic abilities . These abilities established them as a distinctive subrace and a symbol of the dominance the duergar attempted to establish through enslavement and expansionism , until they are the preeminent political force of the Underdark . Relationships . Immediately on her apotheosis , she was exiled by Moradin . Because of this , Deep Duerra had no friends among the Morndinsamman . Some myths claimed that Laduguer was her father , but the two didn ' t show any compassion towards each other . While they were nominally allies , they constantly plotted against one another . Over the past centuries with only small successes , Duerra came very close to attempting to depose Laduguer as the duergar prime deity . She was hated by the illithid god - brain Ilsensine for the many thefts of psionic energy and information from it .