Shock Wave

Creatures in a 15-foot cone centered on you must make a Dexterity saving throw, dodging shock waves that burst from your outstretched hand. On a failure, they take 3d6 lightning damage, or half as much on a success.

At Higher Levels. When you cast this spell by spending Mana points equal to a 2nd-level spell or higher, the damage increases by 1d6 for each level above 2nd. When cast as a 5th-level spell or higher, the lightning damage becomes plasma.