Voltage Blast

A wave of crackling energy zooms from your hand to a point you choose within range and then explodes in a ball of bright, sizzling lightning. Each creature in a 30-foot radius sphere centered on that point must make a Constitution saving throw. A target 8d6 lightning damage on a failed save, or half as much damage on a successful one. If a target is wearing or holding 2 lbs or more of metal, the damage increases by 1d8.