Cord of Stubborn Resolve

Wondrous item, rare (requires attunement)

This braided rope belt fastens tightly about the waist and helps focus the connection between body and mind to overcome fatigue. You can meditate for 1 minute to grant yourself a number of temporary hit points equal to your level. You cannot meditate in this way again until you complete a long rest.

In addition, as a bonus action or as a reaction you can choose to take 1d10 psychic damage to channel your inner focus to gain advantage (or remove disadvantage) on a Strength check or saving throw, or to avoid gaining a level of exhaustion. Each time you use the cord of stubborn resolve in this way, the damage taken increases by an additional 1d10 until you complete a long rest, after which it resets to 1d10.