4th-level evocation
Casting Time 1 action
Range 150 feet
Components V S
Duration Conc. Up to 1 minute

A 20-foot-radius sphere appears. Every creature in the sphere when it appears or that ends its turn there must pass a Strength save or take 2d6 bludgeoning damage. The sphere's space is difficult terrain.

As a bonus action, you can cause lightning to strike up to 60 feet from the center of the sphere. Make a ranged spell attack. You have advantage if the target is in the sphere. On hit, it deals 4d6 lightning damage.

Creatures within 30 feet of the sphere have disadvantage on Perception checks made to listen.

At Higher Levels: The damage increases for each of its effects by 1d6 for each slot level above 4th.