A likely scenario could be that Harry discovers a connection between the magic in his world and the power of the Infinity Stones. He realizes that there is a magical equation or a ritual that can be used to stop the snap. With the help of Hermione, who is well - versed in research, they find the necessary incantations and ingredients. Then, Harry performs the ritual just in time to prevent Thanos from snapping his fingers, saving half of all life in the universe.
In fanfiction, it could be that Harry Potter teams up with the Avengers. He brings his magical knowledge and skills, while the Avengers contribute their combat and strategic abilities. Together, they figure out a way to separate Thanos from the Infinity Stones. Once Thanos is no longer in control of the stones, he can't perform the snap. Harry could use spells like 'Expelliarmus' on a grand scale to disarm Thanos of the stones.
One possibility is that Harry Potter, with his knowledge of magical artifacts, could find an object in the wizarding world that has the power to nullify the effects of the Infinity Stones. Maybe there's a long - forgotten relic that has the ability to absorb or deflect the kind of energy that Thanos uses for the snap. He could also use his ability to speak Parseltongue. If there are any ancient magical serpents or creatures related to the origin of the Infinity Stones, he could communicate with them and find a way to stop the snap.
Harry Potter is a very resourceful wizard. He might first try to understand the nature of the Snap. He could use his invisibility cloak to get close to Thanos unnoticed. Then, he could use the power of the Elder Wand, which is the most powerful wand in the wizarding world. With a well - aimed spell from the Elder Wand, he could potentially break the connection Thanos has with the Infinity Stones and stop the Snap.
A Harry Potter who reverses Thanos would be a very interesting concept. Harry could use his ability to communicate with snakes (Parseltongue) to perhaps take control of some of Thanos' minions. His magical items like the Invisibility Cloak would give him an advantage in stealth. He might even use the Time - Turner to go back in time and prevent Thanos from getting the Infinity Stones in the first place. The Hogwarts environment could also be a factor, with its many secrets and magical defenses that could be used against Thanos.
One interesting scenario could be Harry Potter using time - turner magic to prevent a major threat to the Starks before it even occurs. He could go back in time and change certain events that would lead to the Starks' endangerment.
Voldemort would still be a very likely villain. He would see the Hulk as a threat or a tool to be used for his own evil purposes. He might try to control the Hulk's mind or use dark magic to make the Hulk do his bidding.
There would be a clash of two very different power systems. Harry's magic might initially confuse Thanos. Thanos, on the other hand, with his brute strength and the Infinity Stones, would be a huge threat to Harry. Maybe Harry would try to find a magical way to neutralize the power of the Infinity Stones. For example, he could use a spell that disrupts magical or non - magical energy sources. It would be a battle of wits as well as power.
If we consider Harry Potter fighting Thanos in fanfiction, it's a clash of two very different universes. Harry has his wand and his knowledge of spells. He could try to transfigure Thanos into something harmless, but Thanos' willpower might resist such magic. The Time - Turner could also be a factor if Harry could use it to his advantage, perhaps going back in time to prevent Thanos from getting the Infinity Stones. But Thanos' brute force and his army could pose a great threat to Harry. It would be a battle that would depend on Harry's quick thinking and ability to adapt his magic to this new and powerful enemy.
Well, in a Harry Potter x Thanos fanfiction, Harry could potentially use the Time - Turner (if it still exists in this scenario) to outwit Thanos. He might go back in time to prevent Thanos from getting the Infinity Stones. But Thanos is no fool. He'd be aware of such time - tampering and would likely have counter - measures. Maybe he'd use the Reality Stone to create illusions and deceive Harry. It would be a battle of wits and power where both characters would have to push their abilities to the limit.
The plot could start with Thanos arriving in the wizarding world. Harry senses the great danger he poses. Harry would first try to understand Thanos' powers and motives. He might gather information from the Ministry of Magic's records or from ancient magical texts. Then, he would start to form a team of wizards and witches who are willing to fight. As the story progresses, they would engage in battles with Thanos and his minions. Harry would use his Patronus charm to protect his team from Thanos' dark energy, and he would gradually figure out a way to stop Thanos, perhaps by using a combination of powerful spells and the unique magical environment of the wizarding world.
A 'harry potter destroys thanos' fanfiction would be an epic clash of two very distinct fictional worlds. Harry, with his Gryffindor courage, would face Thanos fearlessly. He could use his Patronus charm to ward off Thanos' dark presence. His ability to apparate could give him an edge in dodging Thanos' attacks. The story could also involve the Ministry of Magic getting involved, perhaps trying to understand and deal with this new threat from a different universe. And the wands of the wizarding world would be a fascinating contrast to Thanos' gauntlet. It would be a story filled with action, adventure, and the exploration of how two such different worlds could interact in a battle scenario.