Night hags resemble hideous women with clawed hands and feet. Their skin is dark blue-violet, their talons and lanky hair jet, their eyes red with a baneful glow.

Night hags are numerous in their own region of Hades, but seldom found elsewhere. If success seems likely, they will attack any good aligned creature. They come to the material plane to slay very selfishly evil people, whose souls in Hades form soul worms (q.v.: a valuable demonic and diabolical commodity).

Finding such a victim, a night hag casts a sleep spell that affects humans even up to 12th level who fail a saving throw vs magic, then strangles the sleeper. If the spell fails, she returns nightly while æthereal, which she can assume at will. By entering the victim’s dreams, the hag makes him (or her) æthereal as well. Each ride until dawn by the hag (who cannot be unseated from the unfortunate’s back) permanently drains a point of constitution. When all points are drained, the victim dies and the night hag carries the soul to Hades.