Creature Humanoid Elongated Limbs Sleek Sinewy

Design a creature that is humanoid but has elongated limbs and a sleek, sinewy body. Alter its posture to be crouched over a stylized, abstract victim, with the creature’s head featuring multiple spiny protrusions. Replace any blood with dark, viscous liquid that glistens, and set the scene in a dimly lit, foggy environment with towering shadows, creating an ominous atmosphere. The overall color palette should consist of muted grays and deep greens to enhance the eerie feel.