The theme of sacrifice could also be in it. Having omnipotent power doesn't mean that there are no costs. There might be situations where the saint has to sacrifice something in order to use her power for the greater good. This could be relationships, her own well - being, or other aspects of her life. And the theme of destiny is likely as well. With her special power, is she following a pre - determined path, or can she shape her own destiny? This exploration of free will and fate is often a common theme in light novels.
In many such fictional settings, the concept of an omnipotent magic for a saint might be related to the balance of the world in the story. Her magic power could be omnipotent to counteract great evils or restore order. For example, if there are dark forces threatening to destroy the world, her magic is the only thing that can stop them, thus it is made omnipotent by the story's design.
It might be depicted through her ability to perform miracles, like healing the incurable or bringing the dead back to life.
There may be a prince or a noble who is involved with the saint. He could be someone who is initially skeptical of her power but later comes to rely on it. Maybe there's also a wizard or an old sage who serves as a mentor to the saint, guiding her in the use of her omnipotent magic.
One unique feature could be its exploration of the concept of omnipotent magic power. It might show how the saint uses this power in various situations, like saving the kingdom or helping the common people.
A common theme is power and responsibility. Since the saint has omnipotent magic power, she has to decide how to use it. Another theme could be isolation. Her great power might set her apart from others, making her feel lonely at times.
I haven't read this novel in detail, but generally, it might involve the saint using her omnipotent magic power to face various challenges, like fighting against dark forces or solving complex problems in the story world.
One similar light novel could be 'Ascendance of a Bookworm'. It also has a unique world - building and a strong - willed protagonist like in 'the saint's power is omnipotent light novel'. Another one is 'That Time I Got Reincarnated as a Slime', which features an interesting power - up system and engaging story arcs.
The saint herself is surely an important character as the story is named after her and her omnipotent magic power.
The plot of this light novel is likely centered around the concept of omnipotent magic power. It could involve the saints using their power to solve problems, face challenges, or even face moral dilemmas. There may be antagonists who are either threatened by or trying to take advantage of the saints' power.
There could also be some other characters related to the saints, like their apprentices or followers. They may inherit or be influenced by the saints' omnipotent magic power. Maybe there is a young character who is being trained by a saint and gradually shows signs of having a very powerful magic due to the saint's teachings.