In a Witcher fanfiction, Harry as the Master of Death could become a sort of mentor to young Witchers. He could teach them about the different aspects of death and how to face it without fear. His ability to control death could also be used to study the dark magic and curses that are often associated with the monsters in the Witcher world. He might be able to reverse some of the more deadly curses or prevent the spread of dark magic that is harming the land and its people. Also, he could use his connection to death to understand the nature of the monsters better, as many of them are often related to death or the underworld in some way.
The Master of Death could potentially use his powers to bring balance to the Twilight world. In Twilight, there is a constant struggle between vampires and werewolves, and humans are often caught in the middle. Harry, with his knowledge and power, could try to create a more harmonious coexistence. He might use his power to ensure that vampires don't overstep their boundaries when it comes to preying on humans. He could also use his understanding of life and death to help the werewolves better control their transformations, which are often tied to the cycle of the moon. And all of this would be done while exploring the new and different magic or supernatural elements in the Twilight universe.
One way it could work is if the Elder Wand's power was somehow equated to a Witcher's sword. The Elder Wand is the most powerful wand in the Harry Potter world, and a Witcher's sword is crucial for combat. Harry, as the Master of Death, could use the Elder Wand's power in a new way within the Witcher's world. He could perhaps use it to enhance his physical abilities like a Witcher's mutations do. Also, the Resurrection Stone aspect of the Deathly Hallows might have an impact on the Witcher's concept of death and resurrection, which is different from the normal human view in the Harry Potter world.
He might use his power to defeat the Kishin more easily. The Kishin feeds on souls and is a major threat in Soul Eater. As Master of Death, Harry could have some special ability to either protect souls or directly combat the Kishin's power over them.
Well, it could be about Harry coming back to life in a new and unexpected way. Maybe he returns with even greater powers, being the Master of Death. He might use his newfound state to fix all the wrongs in the wizarding world, like finally getting rid of all the remaining Death Eaters once and for all.
It could be really interesting. Maybe the Master of Death abilities would allow Harry to survive the dangerous situations in the Stargate universe, like going through the stargates to unknown planets and facing alien threats. He could use his magic along with the technology in the Stargate world.
Well, it could be that Harry has complete control over death. He might be able to bring back the dead, or at least communicate with them freely. Maybe he uses this power to right the wrongs of the wizarding world, like resurrecting those who died unjustly during the war. He could also use it to gain ultimate knowledge, as death is often associated with hidden secrets in the wizarding lore.
In such a fanfiction, we might see Harry Potter's magic blend with the spiritual energy of 'Bleach'. The Deathly Hallows could have new interpretations in the 'Bleach' setting. For instance, the Invisibility Cloak could be seen as a form of spiritual concealment. And his mastery over death might make him a sort of enigma to the characters in 'Bleach'. He could also learn about the different levels of souls in 'Bleach' and how they compare to the concept of death in 'Harry Potter'.
Well, he'd probably use his magic in a more Witcher - like way. Maybe he'd combine his Hogwarts spells with Witcher signs. For example, he could use Wingardium Leviosa along with the Aard sign to create a more powerful force push. He'd also have to deal with the monsters in the Witcher world using his new skills.
It might be a story where Harry Potter, as the Master of Death, is brought to the world of Loki due to some magical accident. There, he has to face Loki's schemes and the different challenges of the Asgardian world. He could use his knowledge of magic from the wizarding world to deal with Loki's illusions and trickery.
The team dynamics would change significantly. Harry has a very different background from the Avengers. He grew up in a magical world, and his values are shaped by that. He might introduce a more ethical approach to using power. For example, the Avengers sometimes use brute force, but Harry might advocate for more subtle magical solutions. He could also form unique friendships. Maybe he and Thor would bond over their experiences with powerful artifacts (the Deathly Hallows and Mjolnir).