Douglas switched the Magic Radar to another mode, then inserted the probe into the ground.
Dumbledore stood beside him, studying the radar display curiously and asking Douglas about the functions of this magical device.
Before Douglas could finish explaining, a three-dimensional black area appeared on the Magic Radar.
Douglas frowned and said:
"Below us is an area protected by all sorts of dark magic. The darker the color, the higher the level of dark magic, so we may have found the right place."
Dumbledore nodded, then patted Douglas on the shoulder and said:
"Douglas, this is as far as you go today. Just leave the rest to me.
"You said this radar could find weaknesses in an area's protective magic. Could you lend it to me to try?"
Douglas promptly put the Magic Radar back in his pocket. He knew Dumbledore meant well, but he only had one Magic Radar. More importantly, although he had successfully modified it, there were still things inside it that he had not figured out. He had merely grafted this world's magical system onto it.
If he simply handed it to Dumbledore, there would be things he could not explain.
Dumbledore watched Douglas's actions and laughed, not taking it too seriously.
But then he saw Douglas take something resembling a Muggle grenade from his pocket and looked at him in puzzlement.
"Douglas, I know what that is, but surely it can't break through the protective magic Tom put in place?"
Douglas explained:
"This is called a Dark Magic Annihilation Bomb. Its materials mainly consist of positive energies, along with the Magic Lightning I used earlier. It can render dark magic ineffective within a certain range.
"If the dark magic is fixed in place, the explosion can disable it outright.
"In a duel with a Dark