"Protego Diabolica."
A wall of blue fire rose from the ground at Grindelwald's soft words, then instantly pushed forward, engulfing Dumbledore in front of him. The red beam did not dissipate, but its path was altered under the burning of the flames, allowing Voldemort to dispel it.
But Grindelwald did not dispel the blue fire. After passing over Dumbledore, who remained unharmed inside it, the rapidly spreading blaze pressed forward with ferocious force. Tongues of fire writhed violently like eels, continuing to lunge in Voldemort's direction.
The Hundred-Eyed Demon that rolled quickly over seemed to intend to rely on its immunity to fire and slam through, but the moment it touched the blue flames, each of its arms began flailing wildly as if possessed. The eyes in its palms kept blinking, and some of its extremely sharp yellow claws stabbed into the surrounding walls, trying to use the leverage to escape. Yet in the blink of an eye, under the effect of the flames, its body began rapidly collapsing from the inside out.
Dumbledore, meanwhile, continued pulling more bricks and stones from the surrounding walls, arranging more defenses in front of him with the Shield Charm—which also made the space they occupied seem as if it had grown wider, because a layer had been stripped from all the walls around them.
After burning away a few things, the blue flames, already beginning to take the forms of several monsters, started charging forward. One serpent-shaped blue flame opened its great maw, dripping fire like venom, and sprayed flames toward Voldemort as it lunged at him.
Voldemort's scarlet eyes were savage. He raised the Hand of Vecna, slightly curled his five fingers forward, and directly tried to touch the blue-fire monster with his hand. The blue flames lunging at him and around