In a fanfiction with Naruto having Riddick's eyes, what kind of new jutsus could he develop?

He could develop a jutsu like the Water - Rasengan. Combining the power of the Rasengan with water chakra, it would be a spinning ball of water with immense power. Another could be the Water - Clone Barrage, where he creates a large number of water clones that can attack and then merge back into a large water wave to overwhelm the enemy.

With the Sharingan and Byakugan, Naruto could come up with a new jutsu that involves the Sharingan's ability to predict an opponent's moves and the Byakugan's all - seeing vision. He could create a sort of 'preemptive defense jutsu' where he can sense an attack coming from any direction (thanks to the Byakugan) and then use the Sharingan's prediction to not only dodge but also counter - attack in the most effective way. Additionally, he might develop a jutsu that uses the unique chakra patterns seen by the Byakugan to disrupt an enemy's chakra system while using the Sharingan to keep the enemy locked in a genjutsu - like state, preventing them from escaping the chakra disruption.

Naruto could develop a jutsu that allows him to completely blend his chakra with the environment. For example, he could become one with the wind, making himself invisible to the naked eye and then launch surprise attacks. With his perfect chakra control, he can precisely match his chakra frequency with that of the wind around him.

Well, in Naruto fanfiction, creating new jutsus is a creative process. Some ninjas could create jutsus based on their emotions. For instance, a ninja who has experienced great loss might create a jutsu that is related to grief, like a jutsu that summons dark energy. Additionally, ninjas can also create jutsus by collaborating with others. Two ninjas with different elemental affinities could work together to create a combined - element jutsu. And sometimes, it's just pure inspiration from a dream or a vision that a ninja has, which then leads to the development of a new and unique jutsu.

Naruto might be able to develop a new jutsu that combines the Kyuubi's chakra with his wind - style jutsus in a unique way. For instance, he could create a tornado - like jutsu with the raw power of the Kyuubi's chakra at its core. He could also potentially develop a jutsu that uses the Kyuubi's chakra to create illusions that are so powerful they seem real.

If Naruto invented the 'Energy Absorption Jutsu', it could change the plot significantly. He could absorb the chakra or energy of his enemies, weakening them while strengthening himself. This would make him an even more formidable opponent and could potentially shorten battles, as he could quickly disable foes.

One possible new jutsu could be the 'Force - Nature Manipulation'. Naruto loves nature and is already good at using nature - based chakra. With the force, he could go beyond just using chakra from nature. He could use the force to actually control natural elements like waterfalls, trees, and rocks directly. For example, he could make a whole forest move to his will, trapping his enemies or creating barriers. This would be a very unique and powerful jutsu that combines his ninja skills with the power of the force.

Sasuke could be one of the people to teach Naruto new jutsus. They have a friendly rivalry and Sasuke has some unique jutsus like his Rinnegan - related abilities. He could teach Naruto some aspects of the Rinnegan's power, or at least how to counter it more effectively which could be considered a new 'jutsu' in a sense.

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.