Ankou's Horseshoe

Origin
Ankou is the personification or god of death in the Cornish, Welsh and Norman French folklore. Accounts involving Ankou describe him as a man or skeleton wearing a black cloak and wielding a scythe while others simply describe him as a shadow. Yet still some discovered writings state that he was the first son of Adam and Eve thus being the first person to ever die. He was charged with collecting souls before he could move on. Arriving at the dying's home in a black coach pulled by four black horses, he has a demon and an angel with him.

Effects
When active it puts possessor into a trance, allowing them to enter the homes of someone they are thinking of. They will move through walls and doors to get to the person and then has the urge to kill them. It remains active anywhere from one to three years then goes inactive for fourteen before activating again.

Collection
Agent Jacob Torres was working a case, The Grim Sleeper Serial Killer, before he got whammied by the Mayan Calendar, afterwards he discovered the case was over but there were unanswered questions. Going over the killer's personal effects he discovered the artifact.