Thunderstorm

You summon a swirling thunderstorm that crackles with electricity and roars with deafening thunder. The storm expands in a 15-foot radius around you and remains localized at that spot for one round. When you cast this spell, up to 4 creatures of your choice within the storm must make a Dexterity saving throw. On a failed save, they take 1d6 damage and be paralyzed for 18 seconds. On a success, they take 1d6 - 2 damage and do not get paralyzed. After casting this spell, your next turn will be skipped and the thunderstorm will stop.