Originally a mundane item gifted by Ice, with Murkey's name and their home address. When Murkey was first learning what it meant to be a sapient creature, they would often get lost and this was meant as a way to return them safely home from their early days of shenanigans.
Murkey's presence seems to magically imbue nearby items with supernatural properties, being a very supernatural entity themselves. The ability to jump in and out of the Paperverse might in part be innate, however, this talisman acts as a compass to make sure Murkey can find their way home.