One closest to death

As one who has come the closest to death on multiple occasions, you have become accustomed to death and coming back from it.

- Increase your constitution by 1

- You now gain advantage on constitution saving throws

- When knocked unconscious and are rolling death saving throws, it is possible for you to wake up and be alive again. When rolling a death saving throw if you roll an 18 or above you immediately come back to life with 1/3 of your health. If this effect happens make an Intelligence saving throw of DC 18. On a success, nothing happens, but on a failure, you become clouded with rage and attack anything in sight.  This check can be retried at the end of your turn. When brought back to life you can take your turn as if it was normally your turn in combat.  

- Alternatively, for every 5 times this feat is used, the DC will decrease by 1 until a DC 12 check. Once you have used this feat a total of 10 times, you attract the attention of the God of death. Depending on roleplay, you can gain the God's favor or hatred so be wary.