Yxunomei

Yxunomei is a marilith and one of the main enemies in Icewind Dale.

In the story of Icewind Dale, she was operating from Dragon's Eye to perform her vendetta on her immemorial enemy - Baatezu named Belhifet, the "Old Enemy".

Yxunomei arrived to material plane after Belhifet was banished from Baator as a result of actions he was taking against her. It is not know for sure if she was also banished, however, according to Belfiet, "he knew, that Yxunomei would follow him", which suggest that she came to material plane on her own will, and her purpose was to destroy her enemy and to turn the Dale to poisonous swampland it used to be.

Yxunomei chose Dragons' Eye as her base of operation, gathering an army built of Lizardfolks, Talona followers, various undead, and Yuan-Ti. Presio, necromancer and Talona priestess, residing on the third level of Dragon's Eye, led the undead horde and gathered information about Belhifet and his allies.

Yxunomei's actions were, as Belfihet would say, poorly hidden; they included abductions of Kuldahar residents and weather disturbance. She also made her Talonians steal the Heartstone Gem from the Temple of The Forgotten God. The artifact was supposed to be used to reveal Belfihet's location and forces. With all the evil going on around, including cold embracing the Great Oak, Arundel, archdruid of Kuldahar, sent a messenger to Easthaven, asking for help. This eventually led a group of adventurers, later Ten-Towns heroes, to Kuldahar and beyond. They begun investigating, and eventually, after collecting a sample of snake venom, they departed to Dragon's Eye, looking for the Hearstone Gem, which would be used by Arundel to locate the evil's hideout.

The adventurers made their way into the Dragon's Eye, destroying Yxunomei' army, including Presio. They eventually met Yxumomei herself, shaped into "Odd little girl" for a disguise. She claimed that, however, in her world conceptions of man and woman, adult and child, have no meanings and have no matter during the war, the form of a little girl served her well, as material plane inhabitants tend to feel sorry for a child.

Yxunomei denies to give up the Heartstone Gem and is eventually slain by the adventurers. They took the artifact back to Kuldahar, only to find city attacked and Arundel bleeding to death, after being touched by a man wearing his skin, who later turned out to be Belhifet himself.

In Icewind Dale II, it is revealed that the women of Kuldahar had been impregnated by Yxunomei's Yuan-Ti. They later gave birth to girls-only crossbreds, with yellow eyes and green skin.

Fighting Yxunomei
Despite her magic resistance and strong saves, Yxumomei can be stopped by area spells like Web and Entangle, which gives time for shooting weapons users. She is also vulnerable to Spike growth and Spike stones. She can be harm with magical weapons +2 and stronger. Player can found +2 arrows in fifth level of Dragon's Eye and is strongly recommended to save the for Yxunomei.