Uncanny Regeneration

Your Constitution Score increases by 1

You were born, gifted, or cursed to be like none other.  With the ability to regenerate and heal wounds and injuries that many others couldn't, even in the midst of battle.  As a result, you try your best to keep it a secret from others as to not to be judged or accused of being in league with fiends, were-creatures or other creatures that can do the same.

For better or worse, you gain the following benefits out of combat:

•  You are able to regenerate missing limbs during a long rest.
•  You tend to eat 2x more than others.
• Your unnatural healing keeps you alive longer than others. Your life expectancy increases by 300 years.
• Your body no longer bares scars.
• You heal 1 hit point per 10 minutes. 

 After taking damage, you receive the following benefits:

• You are able to heal [1 point of health + constitution modifier at will] at the beginning of your turn.
• When making Death Saving Throws, you're able to recover on a 19, or 20.

After combat, you must make a Constitution Saving Throw (DC 10+half your levels+1 per turn healed) to avoid Exhaustion.