By Steven Markley (smarkley@ocean.otr.usm.edu)
The heart's shield activates automatically when a Presence effect is used against the wearer, and reduces the vampire's successes by an amount equal to the successes on a Willpower roll, difficulty 6; Gnosis or Arete can be used instead of Willpower for lupines or mages. It may protect the wearer somewhat against elder levels of Presence (6+), or other emotion-altering powers, such as Gifts or Mind effects, at higher difficulty (8). This bonus is granted at the Storyteller's discretion. The only way to prevent the device from activating is to keep it from touching the user, which can be accomplished by putting it in a pocket or wearing it over a shirt.
This fetish was designed for use by vampires, and requires a Blood Point each time it is activated; non-vampires will take a Health Level of non-Aggravated damage when it is activated, drawing the required blood through the skin (and thus long-time users often sport permanent scars the size and shape of a quarter on their chests from repeated use.)
The amulet, which is crafted from ivory, will take on a reddish cast when first used, becoming a coral pink. Each consecutive use after that will turn it red, then deep crimson, then finally black. If it is used a fifth time in a 24-hour period, while it is black, it will break in half and can never be used again. However, the color will fade back to bone white after a full day has passed.