Mark of Greed

This this is a follow up technique to the Arrow of Greed. After a target has been marked by the Arrow of Greed, leaving a blackened patch on their skin, the user may activate this technique to pinpoint the location of said cursed skin, with exact accuracy, over any distance.
===Strengths:===
Doesn't have a maximum range
Works against targets who are truly evil, who are still tainted by the blackened skin once hit by the Arrow of Greed's curse.
===Weakness:===
One can cut off the blackened skin, which will work as a temporary solution until the skin regrows blackened once more.
The curse caused by the Arrow of Greed can be lifted, although this is not an easy task.
Barriers hide the location of cursed skin