Vitriolic Sphere

From Xanathar's Guide to Everything, page 170; and Elemental Evil Player's Companion, page 23.

Description
4th-level evocation


 * Casting Time: 1 action
 * Range: 150 feet
 * Components: V, S, M (a drop of giant slug bile)
 * Duration: Instantaneous

You point at a location within range, and a glowing 1-foot-diameter ball of emerald acid streaks there and explodes in a 20-foot-radius sphere. Each creature in that area must make 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 and no damage at the end of its next turn.

At Higher Levels: When you cast this spell using a spell slot of 5th level or higher, the initial damage increases by 2d4 for each slot level above 4th.

Learned By

 * Classes: Artificer, Sorcerer, Wizard
 * Subclasses: Fighter (Eldritch Knight), Rogue (Arcane Trickster)