Crown of Insight
A series of evenly spaced, unblinking tattooed eyes line your skin. When you enter an area that contains creatures within 60 feet that are unnoticed to you, the GM rolls a secret Perception check for you against the creatures' Stealth DCs. On a success, the creature becomes Undetected by you, rather than Unnoticed, and on a critical success, the creature becomes Hidden to you. All creatures in the area are then temporarily immune to your crown of insight for 24 hours. The crown of insight doesn't help you find hidden items or traps, nor can it help you discern a creature hiding in plain sight, such as a gargoyle pretending to be an inanimate statue. Additionally, since the effect occurs when you move to enter an area that contains creatures, it doesn't detect an unnoticed creature Sneaking up on you.
Traits
A character can invest only 10 magical items that have the invested trait. None of the magical effects of the item apply if the character hasn't invested it, nor can it be activated, though the character still gains any normal benefits from wearing the physical item (like a hat keeping rain off their head).
Something with the magical trait is imbued with magical energies not tied to a specific tradition of magic. Some items or effects are closely tied to a particular tradition of magic. In these cases, the item has the arcane, divine, occult, or primal trait instead of the magical trait. Any of these traits indicate that the item is magical.
A tattoo is a type of item that is drawn or cut into a creature's skin and usually takes the form of images or symbols.