Pale Night, Mother of Demons (Patreon)

A strange shimmering in the air announces the arrival of a shape, little more than a billowing white  diaphanous sheet. Closer inspection reveals a lithe and seductive form beneath the sheet, a  voluptuous feminine figure indistinct and hazy. Now and then the edges of the sheet rise a little too  highly on the nether wind, yet never rise high. enough to reveal the details that writhe beyond. 

Art by: Paolo Giandoso on Artstation