Closed Circuit (DoS:2)

You channel the hot and cold air around you into a wave of electricity surging outwards in a 15-foot radius centered on yourself. You gain immunity to lightning damage and the stunned condition until the end of your next turn. Creatures of your choice within 15 feet of you caught in the deadly current must make a Constitution saving throw taking 8d6 lightning damage on a failed save and cannot use reactions until the end of their next turn. On a success, a creature takes half as much damage. Following the wave, a cloud of volatile electricity is left behind. Any creature that ends its turn in the electrical cloud must make a Constitution saving throw, and on a fail is stunned until the end of their next turn, at which point the creature repeats this saving throw. On a success, a creature is not stunned or removes the stunned condition if they were previously stunned by this spell. The cloud remains in place for 1 minute, and afterwards dissipates into the air as the electricity loses its potency.