This dark wolf shaped necklace has 5 charges. As an action you can spend 1 charge to see the heat patterns of all living creatures out to a range of 60ft for 1 hour. Undead and creatures without heat patterns are thus not visible. You can see the heat patterns through magical and non-magical darkness or other vision impairing effects (such as heavy fog), as well through solid surfaces that are at maximum 5 inches thick. However, this item doesn't allow you to discern illusions. The necklace gains 1d4 charges daily at dawn.