Well, in some fanfictions, Naruto might gain the ability to control nature through intense training with a hermit or some ancient spirit. For example, he could be led to a hidden grove where the essence of nature is concentrated, and by communing with it over time, he gradually unlocks the power to control nature.
In certain fanfiction scenarios, Naruto could be given a special artifact or talisman that bestows upon him the ability to control nature. This artifact might be tied to an old legend in the Naruto world. He then has to learn how to harness the power within the artifact, which involves understanding the balance and flow of nature. As he studies and experiments with it, he slowly gains full control over nature - based elements.
Maybe he inherits some special bloodline or power that was dormant in him all along. In fanfiction, it could be something like a long - lost Uzumaki clan ability related to nature control. This power could be awakened by a near - death experience or a strong emotional trigger, like when he wants to protect his friends from a powerful nature - based enemy attack.
He could control elements like water, which would allow him to create powerful waterfalls or form water - based defenses. Fire is also a possibility, enabling him to shoot out intense flames. Another type could be earth, where he can manipulate the ground to create barriers or traps.
In some fanfictions, it could be due to a new jutsu he discovers. Maybe during a secret training session in an ancient scroll, he finds a forbidden technique that allows him to control people.
Maybe it could be through some sort of magical jutsu. Naruto is known for his unique ninjutsu skills in his own universe. He might have developed a new jutsu that allows him to connect with and control the Hulk's mind. For example, it could be a jutsu that detects and manipulates gamma radiation, which is what created the Hulk. Or perhaps he found a way to use his chakra in a new way to interface with the Hulk's rage - powered form.
Another possibility is that Naruto acquires the ability to control the weather from a powerful artifact. He might stumble upon an ancient relic during one of his adventures. This artifact has the power to control the weather, and once Naruto touches it or figures out how to use it, he gains this extraordinary ability. It could be that the artifact was created by a long - forgotten civilization that had mastered the art of weather manipulation.
Perhaps it's through an accidental encounter with a powerful magical plant. He tries to interact with it in a normal way but ends up influencing its growth and behavior. This unexpected event makes him aware of his unique power to control nature. For example, he might touch a withering plant and suddenly it springs back to life and starts to grow rapidly under his touch.
In some fanfiction concepts, it could be due to a new, powerful jutsu he discovers or perhaps as a result of some ancient curse or blessing that is bestowed upon him.
In some fanfictions, Naruto might gain the ability to control iron through special training with a unique jutsu master. This master could teach him how to manipulate the iron elements in the environment using his chakra in a very specific way.
Maybe it could be due to some dark jutsu he discovers accidentally. For example, he might find an ancient scroll in a hidden cave that details the method of controlling corpses. This could be a jutsu forgotten by time, and Naruto, being the curious and determined ninja he is, decides to study it.
In some fanfictions, Naruto might gain the ability to control the weather through a special training. Maybe he discovers a hidden jutsu or power within himself during a difficult mission or in a secret place. For example, he could find an ancient scroll that teaches him weather - controlling techniques.
Another way could be as a result of a special encounter. Maybe he discovers a hidden scroll or a mysterious artifact that imparts the power of lightning control to him. This discovery could be accidental, like when he's exploring an ancient ruin or during a battle when he stumbles upon something unexpected.