When your character dies they come back as the exact same level as when you died 1d6 days later at 1 hit point and with 3 levels of exhaustion. While you are dead your soul is dormant within your body. Every time you die roll a d100, on a 6 or lower roll a d3, on a 1 remove one point from your INT score, on a 2 remove one point from your WIS score, on a 3 remove one point from your  CHA score. After each time you die the DC increases by 3 (ex: 6-9, 9-12, 12-15, etc.). After you revive make a DC10 WIS save If you fail roll a % if under 50 you lose the last 1d3 weeks of your memory. You also suffer the effects of the raise dead spell, -4 to attack rolls, saves and ability checks. In addition, when you are revived the DM can make your alignment and characteristics change.

You are resistant to poison damage and have advantage against the poisoned condition,. However you must eat and drink twice as much as a normal person. To gain the benefit of a long rest you need only do light activity for 5 hours.

You can speak read and write Common and 3 extra languages of your choice 

Your memory might escape you at times, however you still can recall snippets of knowledge from ages past, additionally you've been lied too and cheated throughout your unnatural life, this in turn has given you an understanding of how people lie, that is when you can recall it. You gain Proficiency in history and  insight 

You retain the age you had when you were first cursed, if this was early in life you may not grow older and therefore taller and stronger. If it was in the prime of your life you never suffer the aches and pains of the older generations, but if it was in the twilight years forever shall you walk this land as and old person. 

You have lived through countless years, and while your mind may fade at times you retain that knowledge. The curse that affects you has also ensured that you can not break down and be reduced to a puddle, what good is a curse if those who are afflicted cannot suffer the full extent. This leads you to be more resilient than most. You gain +1 to CON and +1 to INT