Night Hag that lives in a cottage next to a still swampy lake.
The Night Hag known as The Asp was first encountered when the heroes traveled to the Feywild via the portal in the Forrest of Hulls. It was there that she spared their lives, as well as told them how to return home, and how to get past the emerald serpent that inhabited the ruins.
When the heroes next met her, she had been captured by two Yaun-ti purebloods and was being forced to perform a ritual. The heroes slain her captives, and repaid the sparring of their lives, all though at first they did not remember their meeting of The Asp. The Asp opened a portal for the heroes to return to Faerun.