"In ancient times, magic was not the primary source of power wizards relied on for a very long period. Upper-year students who have studied the relevant history of magic should know that it was not yet called spellcasting back then, and did not even have a unified name. Of course, we now call it Ancient Magic."
"Ancient Magic is a magical system that is extremely difficult to define. It has no standard underlying logic shared throughout; we can only identify certain common steps, such as rituals and celestial phenomena—especially celestial phenomena. In mysticism, celestial phenomena, including astrological signs, are the most powerful mystical source."
"Therefore, Ancient Magic is usually extraordinarily powerful. It can summon wind and rain, call down stars and draw in the moon—but the price is that it is incredibly difficult to perform. I'll use an Ancient Magic that has been passed down to this day as an example: the Animagus transformation, the pinnacle of Transfiguration."
"Its requirements are hellishly stringent. To complete this magic, you must first keep a leaf of herb in your mouth continuously for an entire month, from one full moon to the next—don't ask me what herb it is. I won't tell you."
The young wizards listening intently below immediately let out groans of despair. Some had even pulled out their notebooks, only to hear such terrible news.
One of the twins shouted, "Why not? We want to learn Ancient Magic!"
"I won't tell you because it's too difficult. I can guarantee it, George, you absolutely wouldn't keep it up. Listen to me—in that entire month, you absolutely cannot swallow or remove the herb in your mouth. Otherwise, you'll have to start all over again."
"Once you've held it for a full month, remove the herb under a full moon. That completes the