Branding Halo

A halo of holy flame appears above the head of one creature you see within range. You can either make this spell trigger upon being cast or set a condition for it, such as the target creature attacking you or knowingly lying. This condition can be anything as long as it's avoidable by the target creature. When the spell is triggered, the target must make a Constitution saving throw, taking 4d6 fire damage on a failure or half as much on a success, which ends the spell. When you cast this spell using a spell slot of 2nd Level or higher, the target takes 2d6 additional fire damage on a failure for each slot level above 2nd.