They constructed magic arrays to amplify their power or cast combination magic.
They had been practicing all along, but had never tried it in actual combat.
The undead army before them had yet to attack, giving them a chance to practice instead.
Malfoy and Hermione Granger had never tried combining lightning magic with water magic.
Katelyle had, however, taught them how to combine the two.
Heavenly Thunderstorm Spell!
It was an intermediate combination spell that called down a thunderstorm. Wherever it swept through, the falling rain became lightning.
Put simply, water conducted electricity. Combining the two merely made their coverage denser.
The Black Demon Dragon beneath the mountain remained very quiet.
Maiding Johnson was dead. Heidi and Maiding Johnson were both utterly exhausted, with no strength left to resist.
The Black Demon Dragon showed no fear of the undead's appearance, nor was it the least bit worried about what they could do to it.
It was, however, somewhat interested in Harry and the others on the mountaintop.
Though it could not see them, it could sense the fluctuations in their magic.
Harry and the others were not powerful. To the dragon, they were opponents it could easily dispatch at any moment.
Yet now, they were unleashing magical power they should never have possessed.
A magic array took shape beneath Malfoy and Hermione Granger's feet. What they were working hard to construct was a Pentagram Array.
This took time, as the two had never worked together before.
Their first attempt was cautious, yet full of anticipation.
Ten minutes.
After a full ten minutes and two failures, they finally constructed a Pentagram Array beneath their feet on their third attempt.
Harry and the others were thrilled and delighted at the sight.
A smile spread across Malfoy's face, and he brimmed with enthusiasm.