Twilight Shadows are ethereal manifestations of darkness., vaguely humanoid

Twilight Shadows are ethereal manifestations of darkness., vaguely humanoid, but distorted and fluid. Their shapes are nebulous, the contours fade like black smoke that blends with the surrounding shadows. Their bodies seem to be made of an insubstantial substance, a mixture of mist and liquid darkness, that waves and floats like a black flame in the wind. His eyes are two points of whitish light, no pupils, that glow faintly in the darkness, conveying a feeling of emptiness and despair. Those eyes seem to watch the heroes with silent malevolence.. From the ends of their bodies, elongated arms extend, ending in translucent claws, that seem to undo reality at their touch. When they move, It's like they're running down the floor, leaving traces of darkness, and its movement makes no sound, except for a faint whisper, like the wind passing through dry leaves, that sends a chill down the spine of those who hear it. The mere presence of the Twilight Shadows makes the temperature drop, and the air around them becomes heavy, as if the darkness itself gained weight and substance.