Celestial HairConsumable 20
Source Pathfinder #156: The Apocalypse Prophet
Price 12,500 gp
Weight negligible
Usage affixed to armor
Activate 
Interact
Trigger You critically fail a saving throw or are critically hit by an attack
This strand of hair shimmers like the strands of fate. When you activate the string, it resonates with a single, perfect note.
The triggering saving throw becomes a failure or the triggering attack roll becomes a regular hit, not critical one. If the source of the attack or effect is an evil creature, that creature must succeed at a DC 41 will saving throw or be enfeebled 2 and stupefied 2 until the end of its next turn.
Traits
This rarity indicates that a rules element is very difficult to find in the game world. A rare feat, spell, item or the like is available to players only if the GM decides to include it in the game, typically through discovery during play. Creatures with this trait are rare. They typically can't be summoned. The DC of Recall Knowledge checks related to these creatures is increased by 5.
AbjurationEffects and magic items with this trait are associated with the abjuration school of magic, typically involving protection or wards.
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.
MagicalSomething with the magical trait is imbued with magical energies not tied to a specific tradition of magic. A magical item radiates a magic aura infused with its dominant school 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.
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.