We're going to burn the forest

Kyle appeared behind Mia, who had been floating above the border with a few other mages. He looked around and noticed the pale faces of the people standing above the border.

"Mia?"

The people floating in front of him were startled, and Mia paused for a second when she heard the familiar voice. She swiftly cast another spell to take down a monster attacking a soldier, then she turned around to look at him.

"What happened, Kyle?"

Yue, Lara, and Niamh, who were floating beside Mia, glanced at him. Jian, who had just joined the mages, was also startled by his voice. Kyle took a deep breath and pointed his finger towards the forest entrance.

"If I give you enough mana, can you construct a shield big enough to cover the entire area in front of the forest?"

Mia blinked, not quite sure what he meant. Nevertheless, she nodded without hesitation.

"I can do it, as long as I have a large amount of mana in my body, but how?"