You unleash a wave of putrefying necrotic energy in a 60-foot cone. Each creature in the area must make a Constitution saving throw. On a failed save, a creature takes 8d6 necrotic damage and is afflicted with a putrefying disease until cured or until it finishes a long rest. On a successful save, a creature takes half the damage and isn’t afflicted with a disease. A creature afflicted with this disease can’t regain hit points.    This spell induces a magical disease in the target that can’t be cured by most effects that remove or ameliorate diseases. A Greater Restoration or Heal spell cast on the target removes this magical disease.