Another aspect could be his connection to water - based natured jutsus. He might be able to perform them more powerfully and with greater ease. For example, the water dragon jutsu could be even more massive and faster, as his entire being is in tune with water. Also, he could use his water body to heal others by sharing his water essence, which has rejuvenating properties.
He could potentially have the ability to control the moisture in the air, creating sudden fogs to disorient opponents. And his water body might be able to split into multiple smaller water clones that are more fluid and harder to destroy compared to normal clones. Since water can take any shape, he could morph his body parts into weapons like water blades.
One possible power for Naruto as a descendant of a god in fanfiction is the ability to communicate with all living things. This would give him an edge in gathering information and in forming alliances. He could also have a special form of chakra that is far more potent than regular chakra, enabling him to perform jutsus that are otherwise impossible.
The 0 - Tailed Jirakin might possess the ability to manipulate space - time on a small scale. It could create mini - rifts or pockets of distorted space - time around it. Enemies getting too close could find themselves in a time - loop of sorts, repeating a small moment over and over until they break free, which would be extremely difficult as they'd be disoriented and unable to effectively attack the Jirakin.
In some fanfictions, Naruto Shiki might possess the power to manipulate shadow elements in extremely unique ways. For example, he could use his shadow to not only mimic the movements of others but also to create shadow constructs that can be used in combat, like shadow swords or shields.
One possible power could be instant teleportation within a certain range. Some sage - like abilities in Naruto involve quick movement between spaces. Naruto, as a born sage, could use this to surprise his enemies in battle. He could suddenly appear behind an opponent or quickly move to a strategic location, giving him an edge in combat.
Naruto has his powerful chakra and his ability to use shadow clones. Shippo can transform into different things. They could combine these powers in really interesting ways. For example, Shippo could transform into Naruto's shadow clones to create a more diverse and confusing attack for their enemies. Or Naruto could use his chakra to enhance Shippo's transformation abilities, making them more powerful and longer - lasting.
It could have the power to absorb chakra. When an enemy attacks with a chakra - based jutsu, the sword could soak up that energy and either store it for Naruto to use later or use it immediately to strengthen its own attacks.
The baby might inherit Naruto's ability to use the Nine - Tails' chakra. Since Naruto has a strong connection with the Nine - Tails, it's possible for the baby to have some form of access to that power. This could manifest as enhanced strength and speed, similar to when Naruto taps into the Nine - Tails' chakra.
In this fanfiction, Naruto Jinchuuriki might have god - like powers such as extreme strength. They could potentially have the ability to control nature on a large scale, like summoning massive storms or earthquakes. Their physical endurance might be enhanced to the point where they can withstand attacks that would normally be fatal.
The unique aspect is the exploration of uncharted water - based abilities. In the official Naruto series, we only see a limited range of water bloodline abilities. But in fanfiction, authors can create all sorts of new jutsus, like water - based illusions that are super powerful.
He could have the power of energy absorption. So, when an enemy attacks him with a jutsu, he can absorb the energy and use it to strengthen his own attacks. It would be like a reverse - engineering of the attacks against him.