Well, in Final Fantasy 8, magic can be drawn from enemies and junctioned to stats. In a Harry Potter - Final Fantasy 8 fanfiction, this could mean that wizards start to learn how to draw magic from magical creatures in the Forbidden Forest in a similar way. They could then use this 'drawn' magic to enhance their own abilities, like Hermione using the magic she draws from a hippogriff to become faster at casting spells.
One way to blend the magic systems is through the concept of spellcasting. In Harry Potter, spells have specific effects and names. In Final Fantasy 8, there are also different types of magic. A fanfiction could create new spells that are a combination of both. For instance, a spell that is a cross between the 'Expelliarmus' spell in Harry Potter and the 'Fire' spell in Final Fantasy 8, which could be used to disarm an opponent and also set them on fire at the same time. This would require a deep understanding of both magic systems and creative writing to pull off.
The magic system in Harry Potter is based on natural talent and learning at Hogwarts. In Final Fantasy 7, materia can be equipped and removed. In fanfictions that combine them, we could see a situation where a wizard tries to use materia to expand their natural magic abilities. Maybe they use a materia that gives them the power to communicate with magical creatures like in Harry Potter, but in a more Final Fantasy 7 - like way. It could be really interesting to see how these two different ways of doing magic interact.
The magic in Harry Potter is mainly about spells and potions. In Power Rangers Mystic Force, it's more about the morphing grid and elemental magic. In fanfiction, you could have characters from Harry Potter learn about the morphing grid. For example, Harry could be given the power to morph into a ranger and use his existing spell - casting skills within the ranger form.
The worlds can be blended through character crossovers. For example, Vaan from Final Fantasy XIII could visit Hogwarts and be amazed by the magic there. He could try to learn magic spells, while also teaching the wizards about his world's combat skills.
Well, often in such fanfiction, the magic systems are combined. For example, spells from Harry Potter like 'Expelliarmus' might be used in the Skyrim setting. Writers might have a character who is a wizard from Hogwarts suddenly find themselves in Skyrim and use their magic there. It creates a really interesting crossover where the different rules and powers of each magic world collide.
In a fanfiction, the blending could occur in a more dangerous situation. Let's say there is a rift between the two worlds and the magic is getting mixed up in a chaotic way. The characters have to figure out how to control this new, combined magic. They might find that some spells from Harry Potter work differently when combined with the energy of the devils in Highschool DxD. For example, the Killing Curse might be affected by the demonic energy and instead of just killing, it could turn a target into a half - devil. This would force the characters to understand both magic systems deeply and find a way to separate or control the combined magic before it causes more harm.
Well, in Narnia, there's the magic of Aslan which is more of a divine and nature - based magic. In Harry Potter, it's more about spells and potions. You could have a situation where a wizard tries to learn the magic of Aslan. For example, Hermione might be intrigued by the magic that brings Narnia to life and tries to study it. She could combine her knowledge of wizardry with the Narnian magic to create new spells.
The magic in Harry Potter is more about spells and potions. In Disney, magic can be more about wishes and fairy - like powers. In the crossover, they could coexist by having characters learn from each other. For instance, Harry could learn about the power of wishes from a Disney character.
The magic in Harry Potter is mainly spell - based, while in The Dragon Prince it is more about primal sources. In fanfiction, a character could try to combine the two. For instance, a wizard could use a spell to enhance the power of a primal source connection. They might use the Wingardium Leviosa spell to levitate an object charged with primal magic.
You could create a new type of magic that combines the two. Let's say there is a character in the fanfiction who is half - wizard from Harry Potter and half - something related to Black Butler (maybe has a demon ancestor). This character has a unique magic that is a blend of spell - casting and the ability to make deals with supernatural forces. Their spells might have a different effect because of the demonic influence. For instance, a simple levitation spell could also cause a small amount of fear in those around them because of the dark undertones from the Black Butler magic.
Well, 'Harry Potter' magic has a more defined system of spells, potions, and magical creatures. In fanfiction with 'The Witcher 3', the Witcher's magic seems more like an extension of their physical abilities. For instance, the Axii sign can be used to control minds, and it's not something that a 'Harry Potter' wizard would typically do in the same way. Fanfictions often explore how these two different magic systems clash or complement each other. A fanfic might show how a 'Harry Potter' character tries to understand the Witcher's magic and how it could potentially be incorporated into their own magical repertoire, or vice versa.