Vitriolic Sphere

4th-Level Evocation Spell (Sorcerer, Wizard)

Casting Time: Action
Range: 150 feet
Components: V, S, M (a drop of bile)
Duration: Instantaneous

You point at a location within range, and a glowing, 1-foot-diameter ball of acid streaks there and explodes in a 20-foot-radius

A Sphere is an area of effect that extends in straight lines from a point of origin outward in all directions. The effect that creates a Sphere specifies the distance it extends as the radius of the Sphere.

A Sphere's point of origin is included in the Sphere's area of effect.

. Each creature in that area makes a Dexterity saving throw. On a failed save, a creature takes 10d4 Acid damage and another 5d4 Acid damage at the end of its next turn. On a successful save, a creature takes half the initial damage only.

At Higher Levels: The initial damage increases by 2d4 for each spell slot level above 4.

Source: Player's Handbook, p. 337