Witcherness

On top of your normal class abilities you will all also have the abilities of a Witcher, this starts with the following abilities:

• You gain Darkvision if your race did not already possess Darkvision. You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can't discern color in darkness, only shades of gray.
• Advantage against poison saving throws and resistance to Poison damage.
• Immunity to disease.
• Your estimated lifespan increases by approximately 400 year