Creation of Shadowfell

Celestial / Cosmic

Shar reaped the rewards of Mystra's death and created Shadowfell

Shar's realm was originally on the Plane of Shadow and was a tower that had no obvious entrances called the Tower of Loss. She would trap those who enjoyed their freedom inside, savoring their despair at their loss, though she would allow petitioners and visiting worshipers to freely come and go (perhaps to further torture the trapped ones).   This is when the Goddess of darkness and night had thoughts of expanding. With Mystra dead at Cyric's hand, Shar reaped her rewards and combined the plane of Shadow with the Negative Energy Plane to create the Shadowfell, where she ruled over darkness ever since.