Demon Light

Demon Light is a ranged spell attack that requires the caster to have both eyes intact. The caster replaces their eyes with that of the Lord Of Darkness' and through them he casts Demon Light. On a failed save, the target is forced to experience 10 years of suffering and torment in hell for every 2 points below the save they fail. At 60 years of torment the soul can not recover and is killed instantly. The exhaustion and damage are instantaneous to the outside world and it appears the target just stares into space before their brain suffers aging and psychic damage (2d10) per level of exhaustion.