This piece of jewelry can be found in a treasure trove. It may not necessarily be a necklace, but if not, it will resize to about that size whenever the user is unaware, and travel to the neck where it does its ghastly deed. Instinct: Steal the air that they breathe

• Entice potential victims
• Move around on the sly
• Tighten its grasp on either the mind, or the body
• Make an animated escape upon discovery