The God of Ice and Fire at Hogwarts

When the grain of Time Sand fell onto the rabbit, Lynn clearly noticed that the strange group of magical light that had previously suppressed the power of the Time Sand did not dissipate but instead transformed into another type of light in the air. It continued to adhere to the surface of the Time Sand.

Moreover, the magical light groups, which had changed their attributes, no longer suppressed each other as before. Instead, they strongly attracted each other like opposite poles of magnets, and they even complemented each other.

While Lynn was thinking, Nico removed the Time Sand, then waved his wand again and cast another Transfiguration spell to turn the teacup into a rabbit.

Nico followed the same pattern and threw the Time Sand onto the rabbit. Lynn could sense that the strange magical light had changed its properties again and was strongly adhering to the Time Sand.

However, although the magical light group after changing its attributes looked the same as the last time, Lynn understood clearly that this magical light now had an entirely new attribute.

As he saw the Time Sand fall onto the rabbit, the power of time returned to the rabbit.

Under the influence of time, the rabbit transformed back into a teacup, but unlike the last time, the magical power from the Transfiguration spell that had originally supported the rabbit didn't drain away. Instead, it separated from the rabbit's body and turned back into pure magical power.

"You should be able to tell now. Tell me."

Nico retrieved the Time Sand and looked at Lynn with a smile.

Lynn thought for a moment and said, "In the magical light group you just attached to the Time Sand, I can feel that it has three different attributes. If I'm correct, the effects of these three attributes are to suppress the power of the Time Sand so it cannot take effect, to stabilize the power of the Time Sand to accelerate time, and to stabilize the power of the Time Sand to reverse time."

"Very good," Nico clapped his hands happily. "You're right. My secret method can make the power of time, which is filled with uncertainty, no longer unknown and uncontrollable. Instead, it can be fixed and turned into something we can harness."

As Nico Flamel explained, the properties of the first magical light group in his secret technique can suppress the power of the Time Sand, preventing it from backfiring on the alchemist due to unintended contact.

The properties of the last two magical light groups allow time changes when the Time Sand falls onto someone to become fixed, enabling time to either move forward or backward quickly depending on the alchemist's will, removing any uncertainty.

This discovery greatly surprised Lynn, and he couldn't wait to ask, "Master, doesn't using this power require a price?"

Upon hearing this, Nico's smile widened.

"I'm very pleased that you're asking about the cost of borrowing this power instead of eagerly wanting to learn it right away," Nico said. "Indeed, it takes great effort to use this power. There is a price."

"Do you like it?" Lynn asked.

Nico replied calmly, "Each time a grain of Time Sand is refined, it requires ten years of an alchemist's life or another 'sacrifice.' Moreover, that grain of Time Sand can only be used three times before it becomes completely useless… unless the alchemist or the 'sacrifice' is willing to spend another ten years of life to recharge it!"

Upon hearing Nico's words, Lynn couldn't help but feel a bit anxious.

He hadn't expected refining a grain of Time Sand to cost so much and to only be usable three times.

What surprised Lynn even more was that, to demonstrate the power of the Time Sand, Nico was willing to consume a third of the energy of the Time Sand.

Seeing the fearful look on Lynn's face, Nico smiled and said, "Don't worry. I won't let you waste your life. The Philosopher's Stone itself contains this power. You can let the Time Sand absorb the power of the Philosopher's Stone to replace your lifespan."

Lynn asked dubiously, "Where does the power of the Philosopher's Stone come from?"

Nico chuckled, but his next words made Lynn feel as though he had fallen into an icy cave, and even his blood seemed to freeze.

"Haha, for over six hundred years, both the magical world and the world of ordinary people have been in constant war. It's not hard for me to take a bit of life from those about to die on the battlefield. This Philosopher's Stone, however, is made from the bones of millions of dying people!"

Nico said indifferently.

Although Nico was talking about the life force taken from those fatally wounded and about to die, Lynn believed that some of those millions of bones must have come from Nico himself...

Although Nico now seemed kind-hearted and like a completely good person, Lynn understood that no truly evil person could live for more than six hundred years, even if they possessed a magical object like the Philosopher's Stone.

After all, human greed can destroy the entire world.

"I understand. Master, please teach me how to refine the Time Sand."

Lynn said solemnly.

Nico replied cheerfully, "No problem! If I remember correctly, you and Rowle will be leaving in a week, right? I'll do my best to make sure you learn the technique to refine the Time Sand in that time."

So, during the following week, Lynn carefully followed Nico's lessons to learn the method of refining Time Sand.

Refining Time Sand was definitely the most difficult of all the material-based magics that Lynn had encountered so far.

However, the greatest advantage of refining Time Sand was that Lynn could do it anytime and anywhere without being restricted by materials.

After all, the only material for Time Sand is a grain of sand that can be found everywhere, and the other materials, except for the ten years of a human's life, were all very abstract and related to the power of time drawn from nothingness.

In his experiments to refine the Time Sand, Lynn failed countless times, and the most severe mistake even caused a small disturbance in the lab. Fortunately, Nico used the secret method to control the time in the Time Sand and erased the turbulence, saving Lynn's life.

This also made Lynn fully aware of the horror of Time Alchemy!

On the penultimate day of the week, Lynn finally managed to refine his own Time Sand, with the price of ten years of life naturally coming from Nico's Philosopher's Stone.

Since the Time Sand had been successfully refined, in the last two days, Lynn continued to learn Nico's secret method of controlling the Time Sand and gained the ability to control it.

With the Philosopher's Stone around, Lynn didn't worry about the power of time contained in the Time Sand running out. He used the Time Sand three times while testing the secret technique.

Afterward, Nico took out the Philosopher's Stone to recharge it.

Additionally, Lynn discovered that when he used the influence of the Time Sand, his energy drained quickly, and his head would instantly feel numb after using the Time Sand.

After testing, Lynn deduced that he could use the Time Sand three times a day, and if he exceeded that limit, he would fall into a coma due to excessive strain.

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