In a crossover, the magic of apparition could be a source of horror. A character could apparate to a wrong place that is filled with Creepypasta - inspired horrors. Maybe a place that looks like Hogwarts but is full of twisted versions of the people and things they know. The magic of divination could also be combined. Instead of normal prophecies, a seer could start seeing visions of Creepypasta - like events that are about to happen in Hogwarts. And the magic of the Room of Requirement could be used in a really dark way. Instead of providing what the user needs, it could trap a character in a never - ending nightmare - like scenario filled with Creepypasta elements.
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.
Magic spells from Harry Potter can be given Magic the Gathering - like mechanics. For example, the 'Expecto Patronum' spell could cost a certain amount of mana (like white mana for its purity aspect) and be used to protect against dark forces, which in the fanfiction could be related to certain types of Magic the Gathering creatures like demons.
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.
The magic in Harry Potter is based on spells, potions, and magical creatures. In a fanfiction, Geass could be seen as a special type of spell or curse. For example, a Geass could be cast like a spell, but with different rules. Maybe it requires eye contact like in Code Geass, and the effects are more long - term and powerful than normal spells. The magic system in Harry Potter could also be used to counter or enhance Geass. For instance, a powerful anti - curse spell could be used to break a Geass if it's seen as a form of dark 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.
One way is to create a magical item. For example, a lemon - shaped amulet that has the powers of fairies and is given to Harry Potter. It could grant him abilities like flying faster on his broom or being able to understand the language of magical creatures. Another way is to have a fairy character who is obsessed with lemons and befriends Harry. They go on adventures together in the wizarding world, using the fairy's lemon - related magic.
The spells in Harry Potter could be combined with the Thu'um of the Dragonborn. For instance, a wizard could cast a spell to enhance the power of the Dragonborn's shout. Or the Dragonborn could use his shouts to disrupt spell - casting of dark wizards.
The magic systems could be combined in terms of magical education. Imagine a school where students from both universes learn. They would study the basics of both magic systems. So, a student would learn about the seven basic magecraft in Fate Stay Night as well as the different types of spells in Harry Potter. This would lead to a new generation of characters who could blend the two magics in creative ways. For example, using the teleportation magic from Fate Stay Night in combination with a Disillusionment Charm from Harry Potter for a stealthy escape.
In fanfiction, you could create a new magic system that combines elements. For Harry Potter, there's wand - based magic. In Percy Jackson, there's the power of the gods and demigod abilities. And in Guardians, there are all the high - tech gadgets and some alien powers. You could have a situation where a character uses a wand but channels the power of a Greek god through it, like using Zeus' lightning power through a wand spell. And the Guardians' tech could be enhanced by this combined magic, for example, a blaster that shoots out spells charged with demigod energy.
If Harry Potter characters meet Creepypasta ones, there could be a lot of confusion at first. For example, when Harry meets Jeff the Killer, Harry might be initially shocked by Jeff's appearance and violent nature. But then, depending on the plot, they could either become enemies or, in a strange twist, allies. Harry could try to use magic to stop Jeff's killing sprees, or Jeff could see Harry's magic as a useful tool for his own dark purposes.