Tense Wristbands

Wondrous item, rare (requires attunement)

These rubbery bracelets cling tightly to your wrists and assist you in detecting danger on the battlefield. When an enemy moves out of your reach and provokes an attack of opportunity, the wristbands tighten slightly — alerting you and allowing you to react faster. You may make one additional attack of opportunity even if you have already made one this turn using your reaction.