Iron Focus

You have become a master at maintaining your focus, even in the heat of battle. You have accomplished this superior concentration through the application of deep meditation techniques.

Maintaining your iron center is a continuous process. You must meditate uninterrupted for one hour every day. Since the meditation is also restful, this hour may be substituted for one hour of sleep or elven trance.

• You gain proficiency in Constitution saving throws.
• You have advantage on Constitution saving throws that you make to maintain your concentration on a spell or ability when you take damage. Note: This advantage is lost if you have not meditated within the last 24 hours. You regain it after meditating. 
• You have learned to forestall the demands of the body in pursuit of your goals. Once between each long rest, if you have spent one hour in meditation you can ignore the effects of one level of Exhaustion for 24 hours. After this 24 hours, if you do not rest immediately, you take one level of exhaustion as well as the additional level you previously ignored.