race features:
Hellish Regeneration. Given food, water and a bit of proper rest, your kind can recuperate from the most grievous of wounds. When regaining hit points for resting, assume your hit dice roll the highest results. If you lose a body part, it will regrow and return to full functionality after 1D6 + 1 days if you maintain at least 1 hit point for the duration
Legacy of Maladomini. You know the thaumaturgy cantrip. When you reach 3rd level, you can cast the ray of sickness spell as a 2nd-level spell once with this trait and regain the ability to do so when you finish a long rest. When you reach 5th level, you can cast the crown of madness spell once with this trait and regain the ability to do so when you finish a long rest. Charisma