SRD:Necklace of Strangulation
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Necklace of Strangulation: A necklace of strangulation appears to be a rare and wondrous piece of valuable jewelry and, short of the use of something as powerful as a miracle or a wish, can only be identified as a cursed item when placed around a character’s neck. The necklace immediately constricts, dealing 6 points of damage per round. It cannot be removed by any means short of a limited wish, wish, or miracle and remains clasped around the victim’s throat even after his death. Only when he has decayed to a dry skeleton (after approximately one month) does the necklace loosen, ready for another victim.