You cast this spell in a 30ft cone in front of you, all creatures within the cone must make a WIS saving throw. On a failure they erupt in holy flames, taking 4d6 damage. the damage type can be either necrotic or radiant damage. At the start of each of their creatures turns they take an additional 4d6 damage. They can use their turn to put out the holy flames, making another WIS saving throw. On a success, they douse the flames before further damage comes to them.
