Eye of ApprehensionConsumable 12
Source Pathfinder Core Rulebook
Price 400 gp
Weight negligible
Usage affixed to armor
Activate 
Envision
Trigger You are about to roll Perception for initiative but haven't rolled yet
Requirements You are a master in Perception
This round piece of cymophane's silky inclusion makes it look like a cat's eye. While affixed, it makes you jittery.
When you activate it, roll Perception twice and use the higher result.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
ConsumableAn item with this trait can be used only once. Unless stated otherwise, it's destroyed after activation. Consumable items include alchemical items and magical consumables such as scrolls and talismans. When a character creates consumable items, they can make them in batches of four.
DivinationThe divination school of magic typically involves obtaining or transferring information, or predicting events.
FortuneA fortune effect beneficially alters how you roll your dice. You can never have more than one fortune effect alter a single roll. If multiple fortune effects would apply, you have to pick which to use. If a fortune effect and a misfortune effect would apply to the same roll, the two cancel each other out, and you roll normally.
TalismanA talisman is a small object affixed to armor, a shield, or a weapon (called the affixed item). You must be wielding or wearing an item to activate a talisman attached to it. Once activated, a talisman burns out permanently.