Warden's Volley

You fire a piece bolt of pure radiant light to a point you choose within range. Hundreds of duplicates of the bolt fall in a volley from above and then disappear. Each creature in a 40-foot-radius, 20-foot-high cylinder centered on that point must make a Dexterity saving throw dealing 6d8 radiant damage on a failed save, or half as much damage on a successful one. 

At Higher Levels: When you cast this spell using a spell slot of 5th level or higher, the damage increases by 1d8 for each level above the 4th.