Tempestuous Barrage

You feel the fury of a tempest build in your heart as you call forth a large ball of water and fill it with lightning. Every creature in a 30 ft radius circle must make a dexterity saving throw against your spell save dc. On failure the creatures take 4d8 Lightning damage and become wet. In addition, any creatures with less than 50 hp receive the paralyzed condition for 1 turn. If the creature has more than 50 hp they make a constitution save dc 12. On a failure they receive the paralyzed condition. On a success the creatures would take half of the damage and are not affected by the paralyzed condition. They become wet.

Using a higher-level spell slot increased the spells damage by 1 d8 for every slot above 3