Shark Tooth CharmConsumable 5
Source Pathfinder Core Rulebook
Price 23 gp
Weight negligible
This dried seaweed bracelet is lined with charms shaped like small shark teeth. When you activate the bracelet, if you roll a success on the triggering check, you get a critical success instead (if you roll a critical failure, you get a failure instead). If you fail the Acrobatics check against a grabbing creature, the creature must either release you as a free action or take 2d8 piercing damage as shark's teeth momentarily emerge from your skin.
Usage affixed to armor
Activate 
Command
Trigger You attempt to Escape using Acrobatics for your roll, but you haven't rolled yet
Requirements You are an expert in Acrobatics
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.
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.