Conjure Volley

You fire a piece of nonmagical ammo from a
ranged weapon or throw a nonmagical weapon
into the air and choose a point within range.
Hundreds of duplicates of the ammunition or
weapon fall in a volley from above and then
disappear. Each creature in a 40ft radius, 20ft
high cylinder centered on that point must make a
Dexterity saving throw. A creature takes 8d8
damage on a failed save, or half as much damage
on a successful one. The damage type is the same
as that of the ammunition or we