Toxic Rain

A deluge of toxic rain drenches the ground in a 20ft radius, 40ft high cylinder centered on a point within range. Each creature in the cylinder takes 2d6 points of acid damage and must make a Constitution saving throw, on a failed save they take an additional 4d10 points of poison damage, with no additional damage on a successful save

When casting this spell using a spell slot of 5th level or higher, increase the poison damage dealt by 1d10 for each slot level above 4th.