He could create a Lightning Clone Jutsu. These clones would be made of lightning chakra and could move at extremely high speeds. They could also deliver electric shocks when they touch an enemy.
A Lightning Dragon Jutsu would be cool. Naruto could summon a dragon made of lightning that can fly around and attack enemies with its sharp claws and bolts of lightning from its mouth. It would be a very powerful offensive jutsu.
Maybe a Lightning Shield Jutsu. Naruto could form a shield of lightning around himself. This shield not only protects him from physical attacks but also can send out electrical discharges to repel enemies who get too close. The shield could be adjusted in strength depending on how much chakra Naruto puts into it.
Maybe a 'Lightning Cloak' jutsu. This would surround him with intense lightning energy, increasing his speed, strength, and also acting as a defense. He could also create a 'Lightning Prison' jutsu, where he traps his enemies in a cage made of lightning.
He could develop a 'Lightning Clone Jutsu'. Instead of regular clones, these would be made of lightning. They could move at high speeds and deliver electric shocks on contact. Another jutsu could be 'Lightning Shield', where he surrounds himself with a layer of lightning for both offense and defense.
One possible jutsu could be the Lightning Dragon. He could summon a huge dragon made of lightning that could attack his enemies. Another could be the Lightning Clone Jutsu, where his clones are made of lightning and can deliver electric shocks upon contact. He might also develop a Lightning Dome jutsu, creating a dome of lightning around him for protection.
One common theme is the struggle to control the lightning affinity. Since lightning is a powerful and somewhat wild element, characters often have to learn to tame it. Another theme is the discovery of new lightning - based jutsu. Writers like to explore how characters can innovate with their lightning chakra. And there's also the theme of rivalry, especially against those with other elemental affinities.
Jiraiya could be one. Although he is known more for his fire and earth - based jutsu, he has vast knowledge and could guide Naruto in using water affinity in unique ways. Another could be Kisame. He is a master of water jutsu. His skills with water manipulation are top - notch, and he could teach Naruto some really powerful and advanced water techniques.
One great 'naruto lightning affinity fanfiction' is 'Lightning's Ascent'. It follows a young ninja with a strong lightning affinity as he trains under Kakashi. Another one is 'The Lightning's Path' which focuses on a character who discovers a unique way to enhance their lightning - based jutsu. And there's also 'Lightning in the Shadows' that has an interesting plot about a ninja using lightning jutsu for stealth and assassination missions.
A jutsu that allows the user to transform their chakra into a liquid form that can seep into the ground and then resurface anywhere within a certain radius as a surprise attack. Another could be a jutsu that uses sound waves to disrupt an opponent's chakra flow, like a high - pitched noise that throws off their concentration and ability to perform jutsus.
In fanfiction, the Lightning Dragon Jutsu can be extremely powerful. It can be depicted as a massive dragon made of pure lightning that can obliterate anything in its path. Another powerful one could be the Lightning God's Wrath, a jutsu that summons a bolt of lightning from the heavens with the power to level mountains.
He could create a jutsu where he combines fire and water to make a scalding steam attack. It would be hard to avoid and could cause serious burns.
One advantage is that he can use lightning - based jutsus more efficiently. For instance, he can perform them with less chakra consumption. Also, it can give him an edge in battles against opponents who are weak against lightning attacks.