Shark Tooth Charm LV.5

Usage affixed to armor
Activate 1 Action-command; Trigger You attempt to Escape using Acrobatics for your roll, but you haven't rolled yet; Requirements Expert in Acrobatics.
Increase roll success by 1 step. 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