Protego Fiendfyre, but the Youth Edition

Isaac found this scene rather regrettable.

If this were a world where interrupting a spell resulted in magical backlash, that blow would have been more than enough to make the dark wizard suffer.

Unfortunately, the world of Harry Potter lacks such a mechanism.

A failed spell at most leaves a wizard choking or winded.

Yet, they were currently inside a house, and there was no wind for the dark wizard to choke on.

"You damned Mudblood!"

The dark wizard, burning with shame and anger, tossed his "baseball bat" aside and pulled a new wand from beneath his robes in the next second.

"Crucio!"

"Crucio!"

"Crucio!"

The dark wizard's wand fired three consecutive Cruciatus Curse spells, each one carrying a more intense surge of negative emotion than the last.

By the third Cruciatus Curse, the negative emotion reached its peak.

This also meant that the dark wizard's desire to torture Isaac had reached its zenith.

Regrettably, not a single one of these three Cruciatus Curse spells struck Isaac.

Every curse narrowly grazed Isaac's body, slamming into the wall behind him.

Isaac dodged the three Cruciatus Curse spells in a "thrilling and intense" manner, then flashed a brilliant smile at the dark wizard.

"Nice shot~"

At that moment, the dark wizard's already thin thread of sanity snapped instantly; his eyes turned bloodshot, and he pointed his wand directly at Isaac.

"Avada..."

"Expelliarmus!"

A red curse shot out from Isaac's wand, striking the dark wizard instantly.

The wand that had been glowing with green light in the dark wizard's hand went spinning toward Isaac the moment he was hit.

The Disarming Charm is the only intermediate spell Isaac learned before school besides Transfiguration, and it is also the fundamental spell for wizarding duels.

In Harry Potter, the protagonist Harry even turned this spell into a red "welding torch" capable of clashing with the Killing Curse.

It is truly an essential spell for home, travel, and visiting friends and family.

Naturally, Isaac had to properly savor a spell with such wide applications.

At first, he thought the spell was nothing special, but looking at it now—

When dealing with enemies who cannot cast spells wandlessly, the Disarming Charm is truly useful.

For instance, right now, the dark wizard, having lost his wand, could only watch helplessly as Isaac cast his spell.

"Incendio!"

When he lost his wand, the dark wizard lost his sense of security and lunged at Isaac.

Then, he heard Isaac shout the incantation for the Fire-Making Spell.

The Fire-Making Spell is a child's trick. Strictly speaking, however, its lethality is quite high.

After all, setting a mountain on fire leads to a prison sentence.

The key to this spell is that it has a counter-curse, and there are even spells that can restrain it.

Whether it is Aguamenti or the Fire-Protection Spell, one can set up a defense, and one could even use Protego to hold out temporarily.

As long as he could get his wand back.

The dark wizard expected the fire to come at him, but he never imagined Isaac would point his wand at the ground.

In the next second, crimson flames ignited on the floor, then began to burn in circles, roaring like a gas stove.

The last image the dark wizard saw was Isaac, in the center of the flames, grinning at him.

Judging by his lip movements, he seemed to be chanting another spell.

What could it be?

"Protego Fiendfyre!!!"

The moment the incantation was completed, the crimson flames surged violently toward the dark wizard, who was still mid-lunge in the air.

Immediately after, the dark wizard in mid-air was instantly engulfed by the raging flames.

It wasn't just the dark wizard; his two wands on the floor, the villa's furniture, and even the entire villa itself were within the reach of the flames.

"Heh... haha, hahahahaha!" Standing in the only patch of empty ground in the villa not yet consumed by the fire, Isaac laughed wildly, completely ignoring the surrounding temperature.

"Dumbledore, save me!"

Once the wild laughter ended, Isaac began calling for help without a second thought.

Although standing in the center of the Protego Fiendfyre would prevent one from being consumed by the flames, the burning wreckage of the villa would not be blocked by the spell.

Perhaps the original Protego Fiendfyre of Grindelwald could provide genuine protection.

But this version Isaac used was merely a youth edition of Protego Fiendfyre; even the incantation differed from Grindelwald's.

Just as Grindelwald had said, he hadn't even unlocked the prerequisite learning conditions for Protego Fiendfyre.

Being able to learn a youth edition was already quite good.

How should one put it? It looked impressive, but it was basically useless against elite wizards.

Because they could use counter-curses, or even Finite Incantatem.

The moment Isaac finished speaking, a flickering Dumbledore appeared beside him.

Dumbledore extended his wand, though he barely seemed to wave it.

"Finite."

The surging flames vanished as if they had been erased, revealing the dilapidated villa and the dying dark wizard.

While Isaac's Protego Fiendfyre (Youth Edition) could certainly be broken by Finite Incantatem, this dark wizard clearly couldn't cast spells wandlessly.

Since he couldn't cast wandlessly, he had to get burned.

Good news: for wizards burned by such "ordinary flames," St. Mungo's Hospital for Magical Maladies and Injuries had mature treatment protocols.

He wouldn't even need to be hospitalized; a bit of on-site treatment would be enough for a full recovery.

Bad news: even if he were cured, it didn't mean he would remain free, as he had attacked a young wizard right in front of Dumbledore.

He had even used Unforgivable Curses... Azkaban was about to welcome another Hogwarts graduate.

Having a party without me, are we? I'll just join myself!

Once the flames had completely dissipated, Dumbledore waved his wand again at the broken walls and ruins inside the villa.

The entire villa seemed to undergo a reversal of time; everything burned by fire, destroyed by spells, or even smashed by the dark wizard was fully restored.

Within seconds, the entire villa was restored from the inside out to its state before the battle.

"Reparo," Isaac recited the spell Dumbledore had used.

The same spell produced vastly different effects depending on who used it.

For instance, Isaac couldn't manage such large-scale, precise restoration.

This was purely a matter of proficiency.

Seeing the villa restored by Dumbledore, Isaac breathed a sigh of relief; after all, this villa was lent to him by Grindelwald for temporary residence.

He couldn't just go and ruin someone else's property, could he?

After cleaning up the aftermath, Dumbledore cast a binding spell on the dark wizard on the ground before lowering his wand.

The previous restoration spell had not repaired the dark wizard's wand.

This dark wizard wouldn't be needing a wand anymore anyway.

Dumbledore stared blankly at Isaac, though Isaac knew Dumbledore wasn't looking at him at all.

He knew Dumbledore was looking through his figure at someone else.

What was this? Using him as a bridge to the past like a time-traveling post office?

"Isaac, that spell just now..." Dumbledore's voice carried a hoarseness he hadn't even noticed himself.

It couldn't be helped; it had been too similar, save for the color of the flames.

Isaac's figure and his magic were just too much like Grindelwald!