"It's my Hogwarts!" Voldemort roared. "Attack! Attack!"
At Voldemort's command, the dark wizards raised their wands in unison. Their roaring incantations merged into a single clamor as spells poured first toward Hagrid.
Their thinking was much the same as Voldemort's: attack this unexpected reinforcements force to shake Hogwarts' morale.
"Salvio Hexia!" Dumbledore's incantation rang out. He spun around and raised his wand toward the Centaurs.
A massive magical energy field abruptly unfolded, radiating brilliant white light and blocking all the dark wizards' spells.
The spells crashed against the magical energy field with a thunderous roar, yet did not harm the Centaurs in the slightest.
The dark wizards' spells fell like torrential rain, battering the magical energy field one after another and exploding into countless ripples amid rolling thunder, yet they did not harm the Centaurs in the slightest.
The dark wizards had been gathered by Herpo. Having long been tempered on the Middle East battlefield, they had barely begun attacking the Centaurs before turning their wands on the wizards behind Dumbledore.
The wizards on Hogwarts' side were equally poised and ready.
At that moment, the battlefield was completely ignited.
The wizards on both sides were like two floodwaters bursting through a dam, crashing violently together amid shouts of battle and incantations.
Dumbledore had chosen to protect the Centaurs. This was precisely the moment Voldemort had been waiting for.
Without a moment's hesitation, he transformed into a cloud of black mist and shot straight toward Dumbledore like an arrow loosed from a bow.
Wherever the black mist passed, surging magical waves tore apart the grass. Dirt and shredded grass sprayed to either side, leaving behind a deep, savage trench.
The nearby Ministry of Magic employees and dark wizards had no time to react before the surging magical waves sent them flying.