Darkvision. Thanks to your infernal heritage, you have superior vision in dark and dim conditions. 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.
Poison Resistance. Chackanath is renowned for its maladies, poxes and venoms. Your connection to Qrask's realm grants you resistance to poison damage and advantage on saving throws against poisons and the poisoned condition.
Legacy of Chackanath. In the foetid mires of Sarundel, nearly everything is toxic. You know the Poison Spray 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 Ray of Enfeeblement spell once with this trait and regain the ability to do so when you finish a long rest. Charisma is your spellcasting ability for these spells.