A tale told about a ring found inside Wave Echo Cave. It was being worn by a skeleton at the bottom of a pool of water.
This jade ring is made a snake consuming itself. It was created for a Yuan-ti priestess to aid in surviving her bizarre rituals. Simply donning the ring grants resistance to psychic intrusion and damage. Upon attunement, the ring tightens around the wearer’s finger with each snake’s fangs ever so slightly piercing the skin.
Upon reaching half of the wearer’s maximum hit points, the snakes begin to twist around the finger constricting rhythmically. The ring will now allow the wearer to tap into their very essence to sustain themselves.