E.M.P.

A bright streak flashes from your pointing finger to a point you choose within range and then blossoms with a low roar that can be heard from 100ft. away, turns into an explosion of lightening. Each creature in a 20-foot-radius sphere centered on that point must make a Dexterity saving throw. A target takes 8d6 lightening damage on a failed save and the target becomes paralyzed for 1d4 turns if it is a construct, or half as much damage on a successful one.

Constructs have disadvantage on the save.

The lightening spreads around corners.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d6 for each slot level above 4th.