Unending Breath

Genasi (Air)

You can hold your breath indefinitely while you're not incapacitated . You can provide fresh air to creatures up to 10 feet around you at the cost of 1 hit point per hour, after the first 24 hours you gain one level of exhaustion, with an additional level gained after every 8 additional hours. Hit points lost by this trait can only be restored by taking a long rest.