Arms of Seven

You unleash a burst of electrical energy from your core, leaping out and electrocuting all creatures within 10 feet of you. Each creature in that area must make a Constitution Saving Throw. On a failed save, a target takes 2d6 lightning damage and can't take reactions until its next turn. On a successful save, a target takes half damage and suffers no additional effects.

At Higher Levels. When you cast this spell using a slot of 2nd level or higher, the lightning damage increases by 1d6.