Asilther usually performed missions like protecting and guiding some individuals, shadowing or kidnapping others, and killing agents of Luskan and of the Zhentarim.
One of her best exploits was stealing from the hoard of the adult black dragonShammagar in a mountain north of Waterdeep. Shammagar promised revenge but Asilther discovered the secret name of the dragon thanks to exploits of Mirt.
Later some said she made peace with the dragon, agreeing to return his hoard. Because of this Asilther stole from a Luskan ship full of treasures raided in Ruathym and directed it to the new lair of Shammagar.