I'm working on Marvel's Spider-Man in American comics.

Chapter 327 Basic Knowledge of Marvel Magic
Strange was very pleased to see that Peter had found his boss, so he asked curiously, "Did she say anything to you?"

"There's nothing there. Am I seeing a live feed?"

Strange raised an eyebrow, withdrew the spell, and the illusion in Peter's eyes dissipated. Strange then nodded; Spider-Man did indeed possess magical talent.

“There are two fundamentals to learning magic. The first is a sufficiently strong mental field. This is the foundation for learning spells and is also a talent. People without talent cannot learn spells.” Strange said as he walked, making Peter follow him. “The second is hard work. Talent doesn’t mean you can reach the top in one step. Even the best mage needs to practice constantly and improve themselves.”

As they passed through a door, Peter and Strange instantly found themselves in a vast snow-covered mountain range. Strange beckoned Peter to follow: "We are now in Kamar-Taj, the residence of the Sorcerer Supreme on the roof of the world, situated on the world's largest ley line. This is the most suitable place for beginners to learn magic. Every year, we pay hundreds of millions of dollars worth of materials to the great Eastern nation as rent and maintenance fees."

The sudden leap of several thousand meters caused Peter to experience some altitude sickness, but he quickly recovered and caught up. As they walked, Strange said, "Your mental strength is very strong, Spider-Man. That's a good thing. It means you have the potential to learn magic. And now, I'm going to teach you how to use magic. Remember, I'll only teach you once."

"Then I'll learn it myself?"

"Then you follow Wang Xue."

Peter saw many of Kamar-Taj's apprentices, while he followed Strange into a residence that felt like it was in the style of the Tang Dynasty. He took off his shoes along with Strange and listened to him talk.

"The reason why magic learners are required to have strong mental strength is that every magician needs to start from the most basic magic. The first Sorcerer Supreme, Agamotto, one of the Vishanti Trinity, summarized three paths of magic. The first path is the inner path. The magical power of this path comes from one's own mental strength. Therefore, people with insufficient mental strength cannot learn magic."

As Strange spoke, he cast a spell, and soon his own body collapsed, while a floating, visible physical soul appeared before Peter. This is astral projection in Western magic.

In the East, this is generally called "out-of-body experience."

"Astral projection, hypnosis, mind control, superficial telepathy, and your spider sense all originate from this. This is the most basic magic. The mineral represented by the Inner Path is lapis lazuli. Generally speaking, as long as you don't overdraw your mental energy, there will be no harm."

"The second path, the path of the world, uses the power of nature to cast spells. It can easily generate force field shields and illusions. Skilled mages can even create different elements, like the Avatar."

As Strange spoke, he summoned the four elements of water, fire, wind, and earth with his left hand and the five elements of metal, wood, water, fire, and earth with his right, forming two different cycles: "This kind of magic also does not consume the user, but it relies too much on the natural power of the surrounding environment and the mage's proficiency. Real-world hubs like New York, London, and Hong Kong are more likely to cast similar spells, not to mention Kamar-Taj. The portals cast by the Sling Ring are also opened by using magical artifacts to manipulate natural elements."

"The downside is that due to the limited power of nature, natural magic is generally less effective and has a shorter duration, but the advantage is that it will not harm the user. The mineral represented by the World Path is jade."

"Finally, there is the third path, the external path, represented by the mineral gold." If the limits of magic that draws power from oneself and from nature are both finite, then where does the power of a magician's truly powerful magic come from?
"When a magic student embarks on the path of the outside world, it means that he has officially become a mage. Magic is a trick to deceive and modify reality, and the more powerful the effect, the more powerful the power required. In addition to the countless parallel universes you have visited, there are other 'extra dimensions' that do not belong to reality."

“Some of these dimensions are pocket universes like Asgard and Olympus, while others are more abstract, such as Hell and the Dark Dimension.”

Instead of casting a spell to create a dimensional path, Strange's astral body revealed the massive heads of one dimensional daemons after another: "There are beings that transcend a single universe, occupying unclaimed dimensions and merging their spirits with those dimensions; these are the dimensional daemons. Mages can summon these dimensional daemons and borrow their power to control dimensions, which is equivalent to borrowing from them."

"Like Vishanti?"

"It's like... the Vishanti planned it all out, and they don't like to hear that."

Strange rolled his eyes at Peter before continuing, "External magic is considered the most advanced and powerful form of magic, but in order to obtain the help of the dimensional lords, mages must learn and execute complex spells and master subtle gestures. The weaker the mage and the stronger the dimension, the more complex the ritual for drawing power from the demons becomes."

"Of course, you can also directly extract energy from unclaimed dimensions, but any mage would be advised against doing so, because pure dimensional energy is too powerful, and prolonged use of dimensional energy will damage the mage's body. However, extracting energy from demons will reduce this damage, such as the Vishanti. Of course, we have to pay some other price. The mages of Kamar-Taj have to use the responsibility of maintaining the safety of reality as part of the price."

"There are also some evil demons, such as Dormammu, Sithon, Set, and Mephisto, who demand prices including the mage's soul, but they are more generous and can quickly enhance the mage's power."

After retrieving all the demon heads, Strange's astral body returned to his body. He got up from the room, dusted off his robes, and handed Peter a sling ring: "Remember this place, Spider-Man. The day you can use the sling ring to open a path to Kamar-Taj, it means you can learn the magic to repair reality."

Peter accepted the sling ring and the basic spellbook. Strange explained the Marvel Universe's spell system in more detail. Peter intended to leave through the portal Strange had opened, but suddenly a question occurred to him.

Are these the only three sources of energy for a mage?

"Not only that, Spider-Man, this is exactly what I wanted to remind you. If you encounter a sorcerer using the Fourth Path, notify me immediately." Strange's expression became unusually serious: "The god of dark magic, Sithon, discovered the Fourth Path, known as the Necromancer's Path. A necromancer is not a sorcerer who summons skeletons to play with; a necromancer is a sorcerer who uses the energy generated at the end of life to cast spells."

“Every single one of them is an utterly wicked bastard who deserves to die.”

(End of this chapter)