Thundering Wave

You summon the primal forces of thunder and lightning, sending forth a shockwave that emanates from your position in a 15-foot radius. The wave ripples outward, dealing 1d4 lightning damage to all creatures caught within its area of effect.

Saving Throw: Each creature within the spell's radius must make a Dexterity saving throw. The DC for this saving throw is 13 plus an additional +3 for every five feet closer to you from the edge of the spell radius. This spell affects all creatures within the radius, friend of foe.