Shadowfell

The Shadowfell, sometimes simply called Shadow, is a prime echo from which necrotic energies and shadow magic stem. The Shadowfell was created in 1385 DR when Shar, having successfully killed Mystra, bound the energies of the Negative Energy Plane with the Plane of Shadow. Since then, the Shadowfell has existed as a center of Shar's power as well as a transitory place for dead mortals on their way towards judgment on the Fugue Plane.