Exhaustive Fighter Redux

Perched at the very precipice of oblivion.

Mastery over one's body allows them access to the deepest recesses of their bodily energy. You gain the ability to perform great feats which were otherwise impossible for you to perform at risk of exhaustion.

• You may add double your strength modifier to your attack damage for 1 minute
• You may increase your movement speed by +10 for 5 minutes.
• You may re-roll any Strength or Dexterity skill check or saving throw once, and can choose which result you take.
• You may regain a use of second wind.
• You may regain a use of an action surge.

After choosing one of these benefits, you must make a DC 10 Constitution saving throw. On a failure, you gain one level of exhaustion. On a success, you do not gain exhaustion, but the DC of subsequent constitution saving throws for this feature increases by 5. The DC resets to 10 after you lose a level of exhaustion through a long rest or other means.

In addition to this, you gain proficiency in Athletics. If you are already proficient, you gain expertise.