You channel the primal energy of storms into your free hand or spellcasting focus before releasing an instantaneous blast of lightning at a creature you can see within range. Make a ranged spell attack against the target. On a hit, the target takes 1d8 lightning damage. If the target is wearing armor or carrying a weapon made of metal, it instead takes 1d10 lightning damage.    This spell’s damage increases by one die when you reach 5th level (2d8 or 2d10), 11th level (3d8 or 3d10), and 17th level (4d8 and 4d10).