Crescent Blade The Crescent Blade was a magical sword created by the goddess Eilistraee . Description . The blade was curved , resembling a crescent moon attached to a leather hilt . The blade ' s enchantments included moonlight - - it could cut through armor and stone - - - protection against evil , and being able to strike quickly . If the wielder was a true priestess , she could use it to sever the neck of any creature , including gods . It was also said to be able to destroy the souls of those who were killed by it . There was silver inlaid in the blade . On it were Drow words that translated to " Be your heart filled with light and your cause be true ; I shall not fail you . " When wielded , the Crescent Blade spouted crimson fire . History . It was said that Eilistraee plucked a pebble from the heavens and tossed it to earth . It grew as large as a boulder and very hot . It was made of moonmetal ; if you look at the moon , you can see a hole in the shape of a crescent . The boulder was forged into a crescent - shaped blade with enchantments . The Crescent Blade was wielded by Mathira Melarn , one of Halisstra Melarn ' s ancestors and an Eilistraeean Sword Dancer from Ched Nasad . Mathira was last seen in Harrowdale , making her way to Black Feather Bridge . About 1373 DR , Halisstra Melarn , a new convert to the clergy of Eilistraee , was charged with recovering the Crescent Blade and using it to slay the goddess Lolth herself . Halisstra , secretly followed by Ryld Argith , found the blade in the belly of a purple worm that swallowed Halisstra . She was able to use the blade to cut her way free . Halisstra made her way to the new Demonweb Pits , where she was confronted by Danifae Yauntyrr , to be the " Yor ' thae " of Lolth . During the fight , the Crescent Blade was broken and left where it fell . After becoming Lolth ’ s Lady Penitent , in 1375 DR Halisstra Melarn informed Qilué Veladorn ( leader of the Church of Eilistraee ) and Cavatina Xarann ( a Darksong Knight ) about the whereabouts of the " Crescent Blade " . Cavatina was dispatched to the Demonweb Pits to retrieve the sword , which she found intact . However , the weapon was no longer the same weapon that Eilistraee had crafted , instead it became a vessel for the balor . Nonetheless , the sword was used by Cavatina to kill the demigod Selvetarm . After that the Wendonai - possessed Crescent Blade was brought to Qilué Veladorn , who struggled against the Balor ' s influence , as he tried to corrupt her by leading her to think that she would have been able to kill Lolth with the sword . Qilué ' s will was however not defeated by Wendonai , and she devised a plan to use the sword to kill him permanently . She intended to summon the demon and then take him into herself , destroying him with Mystra ' s " silver fire " . If successful , she would have freed the drow from the demon ' s influence , and in 1379 DR , with that goal in mind , Qilué and her sister Laeral Silverhand traveled to the only place where such a task could be accomplished : the royal court of anicent Ilythiir , where Wendonai was summoned for the first time . Fearing that Qilué would lose her life in the ritual , Laeral froze her in time and went to seek help , but in the meantime the drow priestess was found by the Lady Penitent , who took hold of the " Crescent Blade " . Cavatina Xarann , who had also reached the ruined court , was killed by the Lady Penitent , who shortly after took Qilué ' s life as well . In fact , Eilistraee inhabited the body of her chosen to try to free Halisstra from Lolth ' s influence , but Wendonai tricked her into killing Qilué ( and , apparently , the Dark Dancer alongside her ) before that could happen . However , by that time , the sword no longer had the power to destroy souls ( Cavatina ' s soul being still intact after the sword struck her was an example ) . Freed from Wendonai , during the Dark Maiden ' s absence , the Crescent Blade was then powerless , although its state after Eilistraee ' s return during the Second Sundering remained unknown .