As an extremely advanced and dangerous form of Dark Magic, Fiendfyre's greatest trait was its ability to continuously strengthen itself by devouring whatever lay around it.
Voldemort used this trait of Fiendfyre to completely suppress all of Quirrell's attacks.
During the years he had spent studying under Nicolas Flamel, Quirrell had devoted all his energy to Alchemy, allowing him to better unleash the Philosopher's Stone's power.
Under most circumstances, this was undoubtedly his core advantage.
But once that advantage was countered, Quirrell would immediately be placed in an extremely passive position.
Against an ordinary Dark Wizard, he could still rely on the spells he had mastered to contend with them as best he could.
However, the one standing before him now was Voldemort. Perhaps withdrawing from the battle and denying Fiendfyre the chance to grow was the best option.
Voldemort naturally understood this as well. The instant the Fiendfyre serpent finished devouring the spear, it opened its blazing maw and lunged straight at the distracted Quirrell.
The Fiendfyre serpent was unbelievably fast, leaving a twisted trail through the air.
Feeling the surging wave of heat rushing toward him, Quirrell immediately beat his metal wings and retreated rapidly, beginning to evade the Fiendfyre serpent's attack.
The Fiendfyre serpent abruptly changed shape, its body instantly stretching much longer.
"Damn it!" Quirrell clenched his teeth, veins bulging across his forehead as his wings beat even more frantically.
Voldemort had also changed targets. Quirrell's earlier interference had already left him seething with anger, and now he intended to press his advantage and deal with this troublesome nuisance first.
Quirrell was drenched in sweat. Magic fluctuations enveloped his body, and his wings seemed trapped in a swamp; every beat required immense effort, leaving him barely able to move.
The Fiendfyre serpent accelerated further, closing to