Crackling Spear

A glowing yellow blast streaks toward a target within range and bursts into tendrils of lightning. Make a ranged spell attack against the target. On a hit, the target takes 6d6 lightning damage. if it is wearing metal armor, it takes 2d8 extra lightning damage.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 2d6 for each slot level above 3rd.