Elemental lightning is the sub-element of Air. The element of lightning is associated with powerful flares of emotion, or sudden decisions.
Lightning magic can be used to create electric currents, or send bolts of lightning at opponents. At lower levels, lightning magic can be used to throw a small bolt of lightning, or else temporarily run current through a metal object. At higher levels, lightning magic can call down bolts of true lightning.
Lightning Elementals are generally fairly easy to work with, though they are very focused on immediate goals, and can be difficult to rein in. The guardian elemental of lightning is a cobra.