The Wrath of Amyntall

A line of intense light from the sky travels 60 feet long and 5 feet wide emanates from a point you choose within 150 feet in any direction. Each creature in the line must make a Dexterity saving throw. A creature takes 6d8 radiant damage on a failed save, or half as much damage on a successful one.  You can re summon the ray of light again as an action each round until you lose concentration or the spell is dispelled.

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the damage increases by 1d8 for each slot level above 5th.