Design a terrifying, alien-inspired creature called a Nychlith. It has an elongated, skeletal arm with stretched, almost translucent skin clinging to bone-like structures. The skin is covered in small, glowing cracks that faintly pulse with light. Its hand ends in six unnaturally long, bony fingers with razor-sharp, black, claw-like nails. Parts of its flesh appear decayed, but in an otherworldly, unnatural way—not realistic gore, but eerie, alien decay. Its joints are exaggerated and slightly bent in the wrong direction, giving it an unsettling, twisted look. The whole creature feels ancient, cryptic, and disturbing.

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