One possible consequence could be his estrangement from his friends. In the original Harry Potter world, his friends are firmly on the side of good. If he starts using dark rituals, they might not be able to understand or accept his actions. Another consequence could be a corruption of his own soul, as dark magic is often depicted as having a corrupting influence in the series.
He could lose the trust of the wizarding community. Harry is a symbol of hope in the regular story, and using dark rituals would shatter that image. This could lead to him being hunted or ostracized. Also, it might attract the attention of dark forces that he doesn't really want to be involved with. They could try to manipulate him further into the world of dark magic, thinking he's one of them. And his own magical abilities could be affected in unpredictable ways. Dark magic has a different nature compared to the light magic he's used to, and it might backfire on him.
In fanfiction, if Harry Potter uses dark rituals, there are numerous consequences. Firstly, there's the internal struggle within himself. He has always been against dark magic, so using it would create a conflict between his old values and the new power he's dabbling in. This could lead to mental and emotional turmoil. Secondly, from an external perspective, the Ministry of Magic might consider him a threat and take action against him. Even if he's using the dark rituals for what he believes is a good cause, the Ministry may not see it that way. Additionally, he could end up setting a bad example for the younger generation of wizards, which would have far - reaching implications for the future of the wizarding world.
Alliances play a crucial role. Characters can band together to resist dark rituals. They can combine their magic powers and skills. For example, a group of students from different houses at Hogwarts might join forces. One could use their knowledge of ancient runes, another their skills in defensive magic, and yet another their ability to think quickly on their feet to prevent a dark ritual from being carried out on the school grounds.
One possible consequence could be a moral breakdown within Harry himself. He's always been against dark magic, so using Crucio might make him question his own values. Another consequence could be alienation from his friends and allies. They would likely be shocked and appalled that he resorted to such a cruel curse.
In fanfiction, the consequences can be complex. The snake - based healing might create a bond between the healed person and the snake that has unforeseen implications. For example, they might start to have some snake - like characteristics or instincts. Additionally, the method of using the snake to heal could attract unwanted attention from dark wizards who want to use this power for evil purposes. Harry might then have to protect the knowledge of this healing method and those who have been healed, which could put him in many dangerous situations.
It's a complex issue. In the context of fanfiction, it can be seen as an exploration of the character's darker side. However, in the original Harry Potter lore, dark rituals are associated with evil. So, from a purist's perspective, it might seem unethical as it goes against the essence of the hero we know. But fanfiction often bends the rules for creative exploration.
One possible consequence could be that he loses the trust of his friends. Ron and Hermione, who are firmly against the dark arts, might turn their backs on him. Another consequence could be that he is ostracized by the wizarding community. The Hogwarts faculty, who have always been on the side of good, would likely be very disappointed and may even try to stop him. And he could also attract the attention of the wrong kind of wizards, those who are into the dark arts themselves and might use him for their own purposes.
In some fanfiction, dark rituals might involve dark magic objects. For example, the use of the Resurrection Stone in a way that goes against the natural order. It could be used to bring back a powerful dark wizard who was once defeated, creating chaos in the wizarding world.
He could lose the trust of his friends. In the original series, his friends rely on him to be a force for good. If he starts using the Dark Arts, they would be horrified and might distance themselves from him. Also, he could be in danger of being corrupted by the dark power, which could change his personality and make him more like the villains he once fought against.
One possible consequence is that the wizarding world would be in a state of confusion. The traditional boundaries between good and bad would be blurred, and many wizards might not know how to react. Some might fear Harry's new - found power over the Dark.
He could lose the trust of his friends. In the Harry Potter world, his friends know him as a good person. Using Crucio would shock them and make them question his integrity.
One consequence could be that other characters find out. They might be very angry with Dravo for using such a manipulative method. It could lead to Dravo being ostracized by the wizarding community.