Depict a vast, formless entity that seems to engulf the entire scene with its sh

Depict a vast, formless entity that seems to engulf the entire scene with its sheer presence. The figure could be a shadowy mass with barely discernible features, such as faintly glowing eyes or a suggestion of a face. The background should be a void-like environment, with swirling darkness that gives the impression of being watched or consumed. The overall effect should be one of overwhelming dread and the feeling that something terrible is always lurking just out of sight.