Crystal Rain

A hail of crystal rains to the ground in a 20-foot-radius, 40-foot-high cylinder centered on a point within range. Each creature in the cylinder must make a Dexterity saving throw. A creature takes 2d8 bludgeoning damage on a failed save, or half as much damage on a successful one.

The Crystal rain turn the storm's area of effect into difficult terrain until the end of your next turn.

Optional. When you cast this spell you can use a gem worth 50 g (no higher or lower) to add 1d8 damage

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