Facilier's Talisman is a voodoo amuled, used by the voodoo-witch and shadow man, Dr. Facilier. It's primary ability is mainly demonstrated to the public, as it shows to shape-shift the current owner, whom wears the talisman, with the exception of the voodoo masters, including Facilier, to the victim, they target, after aquiring blood. In most cases, they used Prince Naveen's blood to turn Lawrence into a doppelganger clone of the real Naveen.
In Disney Villains War universe, the talisman is used as the "ke" to summon the Black God, Chernabog, in the mortal plane.