Voltarris

You drain 1d4 + 1 hit-points. A burst of lightning erupts from your fingertips, forming a jagged line 50ft long and 10ft wide in a direction you choose. Each creature in the line must make a Dexterity saving throw. A creature takes 4d4 lightning damage on a failed save, or half as much damage on a successful one.

Any creature struck by this spell wearing armor made of metal becomes paralyzed for 1 round.

At Higher Levels. When you cast this spell at character level 3rd or higher, the damage increases by 1d4 for each level above 3rd.