Affliction (EFA - A)

You touch a living creature and bestow upon it an affliction. The creature must make a Constitution saving throw. A creature takes 4d8 radiant damage on a failed save, or half as much damage on a successful one.

In addition, on a failed save the creature has disadvantage on all saving throws until the end of your next turn. If the target creature is evil, it has disadvantage on its Constitution saving throw to avoid the spell