"I'm not that capable yet," Lancelot rolled his eyes, "It's mostly the work of old elves…"
He could indeed create such long, spiky vines, but only to a maximum extent of about a hundred feet, which was nothing compared to this miles-long wall of thorns that encircled the entire fortress.
For most of his life, magic had been a thing of fairy tales and folk stories, until the elves appeared before the Rebel Army and he learned that such supernatural power truly existed. Nevertheless, magic maintained a low-profile mystique, seldom used carelessly.