You place the thin chain over your neck and settle it into place beneath your robes. With a jangle you feel it quickly cinch tight around your throat and cut off your air.
Mages might have noticed the magic aura in time, and a thief's reflexes might help.
Roll and compare against the list below:
5+ you extricate yourself from the necklace with just a little rope burn and no permanent injury
3-4 the fine chain saws through your skin and cuts off enough air before you tear it away to make you woozy for a few minutes, lose 2HP
1-2 you don't react in time to get your fingers under the chain as it tightens. You're blue in the face and raw from clawing at your own neck by the time you free yourself, lose 4HP
You see Morg's eyes following you and they glint as if with silent laughter at your misadventures.