Developed by the Drow Wizards of House Xorllarin, this spell is designed for battlefield use and hearkens back to ancient Elven  Mythal Magic.  A net of lightning covers an area that is 10 feet tall with a 80-foot radius, centered on a point you can see 100 feet directly above you. The spell can be adjusted to cover any area up to its maximum dimensions as previously noted. 

All creatures within the area of effect must make Dexterity saving throw. A creature takes 4d10 lightning damage on a failed save, or half as much damage on a successful one. On each of your turns until the spell ends the net continues to cause damage.

At Higher Levels. When you cast this spell using a spell slot of 6th or higher level, the damage increases by 1d10 for each slot level above 5th.  The spell increases in duration by one round for each additional caster above the required initial three.