The next day Lucas was asked to hold a class that contained info about the other three theorems, so Lucas reluctantly went to the classroom and started his lecture.
"Okay fuckboys, what do you want me to teach exactly?" Everyone was stunned hearing those words coming from a teacher, Lucas noticed this and said "Perhaps that's too soon. Okay students, I've been told that I need to tell you about the other three magic theorems. So any wishes, which one are we going to start?" It was while saying this that he noticed that the archmage was also here to watch the lecture. Victoria then raised her hand and said "How about we start with Pion, Professor Knave."
Lucas then said "That sounds like a good starting point. Ahem! Let's get started. Pion theorem. What does it hold? Well basically it is the most basic of basics. Useful to everyone who hasn't studied other theorems, but it can get difficult when casting high level spells. The idea of Pion theorem is just the feeling. That's it. You don't need any fancy magic circles nor necessarily any chants. The only thing that matters in Pion theorem is that you just will the magic so hard it happens. Focus on the single idea that you need to light a fire with magic. Focus on it so hard and it may happen. Some say that getting the feeling of your mana helps the process, but that is arguably not necessarily the case. The thing that matters in Pion theorem is the focus on making something magical happen in a most natural way. To some this may come easily. And to others, it may take years and years of practice without ever getting results. But when you make that breakthrough, you may be able to cast the magic spell again.
Well calling them spells is a bit contradictory. They are more like natural phenomena that happen thanks to magic. You use magic to will something to happen and it happens.
The Pion theorem was probably the first way for anyone to cast magic in the entire world.
The Pion theorem is also the type of magic that less intelligent creatures like animals and monsters use. Goblins and other more smart monsters can also use other theorems, which is most likely the Lost theorem, but the Pion theorem is the most likely starting point with all of them.
The biggest problem with the Pion theorem is that it is hard to make complex things happen with it. Sure, you can summon something from another plane of existence if you try hard enough and have sufficient mana, but without a clear picture of what you want, it is a giant gamble in most cases. You can make the storm go away if you focus hard enough, but you need a clear picture to make the storm actually go away. If you cannot imagine it clearly enough to happen, then you can't do magic with the Pion theorem.
What the Pion theorem grants in simplicity, it takes away the user's power of will. That means the more phenomenon you make happen with magic using the Pion theorem, the more willpower you spend. If you use too much of it, you often either lose focus of things or just black out completely.
There is also the actual situation when you are about to get attacked and your only way to survive is to shoot massive flames out of your hands. You may end up putting a small fingernail sized flame in front of you that can't defend you. You didn't have a clear enough picture and the phenomenon you caused made just a simple tiny flame. Usually when in a dangerous situation, your instincts usually make it become a massive flame if you have the capacity to do that. But if you don't have enough mana to do it or you are too confident that you will make the flames appear, you may end up with that tiny flame in front of you.
Some of us have a more natural instinct to use magic from the Pion theorem and some of us don't have it. Just because you can't get a hang of magic from the Pion theorem doesn't necessarily mean you are locked out of other theorems. Remember, the Vert theorem was made specifically for those who don't have the natural instinct to use magic from the Pion theorem.
There isn't much else to talk about for the Pion theorem since it is purely limited to the person's will and their imagination. If you want to get good at using the Pion theorem, read books about science. Those can actually make it more easier to picture the magic phenomenon happening.
Then let's get to the Lost theorem, the spooky theorem if you may. Generally associated with witchcraft and primal spells and the sort, but they can actually be more than that. In fact, using the Lost theorem can make you better fighters physically if you manage to cultivate the bones that make you.
Speaking of bones, did you know that when the world was built, it was built to exist thanks to the pillars of Maa. Those pillars are more commonly called "the earth bones", which shape the whole world as a whole. Living things have bones in them that can keep them together. They may not be actually physical bones, but spiritual bones that keep the living thing going. And since in some beliefs the world is one big living thing, then it has to have itself bones of its own. And those are what we call the earth bones.
Anyways, the way to actually cast any sort of spells in Lost theorem is to speak the words that the earth bones are tuned from. That language is called many things like witch tongue, language of bones, the song of the north and most commonly as Uralic language. The sect that I can actually talk about is the Finnic sect, but know that Ugric, Permic and Sami sects exist. I'm just not familiar with them.
When you speak the actual words, the earth bones themselves dance in tune with the words. It has been proven that the more of a poetic song the chant is, the more the earth bones will dance for you and bring forth magical miracles. It also helps the spell if there are some musical instruments playing at the time of the chant.
But overall, the Lost theorem is most commonly used for cursing others and extending one's natural lifespan. It can do so much more as it has been proven by the silver witch Sara who helped when the world was stricken by a plague.
That about does it for the Lost theorem. Are there any questions about it before we move on?" Annerose raised her hand and asked "What is the strongest spell you can cast in the Lost theorem?" Lucas says "Well there are two contenders, one is a blessing called "Zero-sum" which basically makes any attack meaningless in either designated area or a target. The other spell is an attack based spell called "Jääukko's ice prison" which basically makes the person you are targeting permanently frozen. By the way, that frozen effect can go through any other effects or protections, so it is really effective if you can actually cast it on someone well protected. The prison is eternal in terms of the duration, it cannot be broken with attacks of any kind and it never melts, but the target can be released with proper spells casted by a user who understands how Jääukko's ice prison actually works."
Lucas then asks "Are there any other questions?" Archmage then asks "Can you tell us the chant of "Jääukko's ice prison" like you did with the "Welcome of hell" spell?" Lucas says "I think it is for the best that I won't give you access to that. The reason being, when saying the magic words that the Inertia theorem's spells require, you need to have a certain mindset before casting spells of that theorem. In the Lost theorem however, you can actually cast the spell just by saying the words required. The problem isn't what you can do with it. The problem becomes that if a novice tries to chant any spell from the Lost theorem, they usually fail to control the magnitude of the spell.
There wouldn't be a problem if it ended when you run out of mana, but since the way that the Lost theorem's spells actually work, your lifeforce will be taken as well if you don't have enough mana. This means that in most cases when the correct words are said by a novice who hasn't been trained to control spells from the Lost theorem, the spell will absorb all the mana and lifeforce out of you whether you like it or not. The person will actually cast the spell in the magnitude that you subconsciously made it.
And then we get to the part where you say the words of a spell that requires more energy than your mana and lifeforce can provide to even activate properly, the last thing it will take in order for the spell to activate is your soul. If you try to eat more than you can chew in the Lost theorem, you will pay the price dearly. It doesn't matter how little more the actual spell needs, if the mana and lifeforce isn't enough, then it will absorb your soul once and for all.
THIS is the reason why learning any magic from a witch's tome is considered a great sin. Witches usually learn the correct words from intense meditation sessions that connect them to where they can observe the earth bones and learn the correct words. They know what the words can actually do in that meditational state, so they won't make a mistake on saying the words that can lead them to their demise. Once they get the correct song to chant, they write it to their tomes in order for them to possibly pass on this knowledge to a person who is actually trained by them.
I hope I don't need to say more in terms of danger when talking about the Lost theorem. If you want to learn spells from that theorem, then find a proper teacher who can teach you how to properly control the words of the earth bones. I think that every book you would learn about the spells in this theorem will, or at least should, tell you the danger of saying the words carelessly. I thought that this was common knowledge to the people who learn about magic theorems, but it seems our dear old archmage here doesn't care for that."
The archmage looks at Lucas with annoyed looks in his eyes. Then he says "I simply wished to know the spell. I had no intention of actually saying the words of that chant." Lucas says "You know that all the people here didn't know about that, right? Someone here would have had a wild idea to try it and end up losing their soul as a prize of their ignorance." The archmage Warnas said to him "But you were so eager to tell us the secret of "Welcome of hell" spell without batting an eye." Lucas said "As I said, and I will repeat it again, that the spells from Inertia theorem won't activate if you don't have the right mindset. And if ANY of the students who took the class would HAPPEN to have the correct mindset, then I think that they are geniuses who are threading too close to the sun."
The archmage Warnas then says "Why don't you get to the Inertia theorem then? That is the only one that is remaining." Lucas then stares at Warnas for a while until he decides to continue the class.
"The Inertia theorem. A theorem that was kept away from the knowledge of the masses for a long time before they had to use it as a bargaining chip to make sure their family survives the onslaught of non demon races. A masterful move, but I still find it as a bit of a shame that they had to resort to that.
What is the Inertia theorem? A magic that speaks the words of the magic itself. The words of the inbetween. The words of the inverted world. And one member of the Inertia family once called them the words of the abyss. Call it what you may, the magic in Inertia theorem bends the laws of this world that no normal magic could otherwise.
The first step and the easiest step is to learn the language that is spoken in the chants of the Inertia theorem. The other two aren't any easier.
The second step requires you to understand the full feeling of how not to be. This means to understand the time when you weren't conscious, the time when you weren't even born. You have to learn how that feels when you don't exist. It also applies when talking about the time when your soul is destroyed and you become nothing. If you still are confused, know that it doesn't mean to understand the state of undead, it means the state that comes when you are not anything. Like I said, learn how it feels to not be. How to be and not be. If you can't get past this step, then you can't get past the third and last step.
The third one requires you to get the correct feeling when you are having a lucid dream, but in real life. That sounds simple, but to actually manage to do it is a whole other matter. It requires you to first believe fully that all of reality is a dream of someone and then you have to convince yourself fully that you can control the very reality of the world by just thinking about it. You can never actually do it, but the belief has to be there when casting the spells.
And when you understand all of that, only then can you cast spells belonging to the Inertia theorem. Anyone up to the task?"
The room was silent. Then Drace raised his hand and asked "You mean to say that you have reached this level of understanding?" Lucas says "I think that it is a little easier for a demon to understand this way of thinking, but that is not to say that it is an easy path to thread. It took Legul over 200 years to naturally get that level of understanding. He could have used his mimicry to learn that way of thinking and skip the last two steps like I did, but he decided to learn it by himself." In reality Lucas, and by proxy Legul, learned the way how to think this way by mimicking Sylviana, who had learned it by herself. The point Lucas is trying to make here is that he looks like he knows the history wrong if anyone else knows the truth. But if no one knows the truth, then Lucas will win either way.
Lucas then says "So how do you think you can do it dear archmage Warnas Turious? Happy to learn that you have to reach an understanding that isn't meant for mortals in order to cast that spell? But you already knew that." Warnas then says "I will find a way to cast that spell even if it's the last thing I do." Lucas responds with "Good luck. Shame you don't have the same ability to cheat the system that we mimics have."
Warnas looked angrily at Lucas and Lucas just smiled back. Then Lucas said "Class dismissed. If you have any other questions, then feel free to ask me before you leave. I will stay here until the bell rings."
Then some students and people from the mages tower leave and then Elliot comes and asks Lucas "Which one would win, the zero-sum or the Jääukko's ice prison?" Lucas answers "Jääukko's ice prison. The reason being that that spell isn't classified as an attack and only a status effect in the zero-sum spell."
Tenrir asks "How would the ice prison work on gods?" Lucas answers "If you get the opportunity to cast it, then you can absolutely make a god turn to ice. The problem is that the spell has a long chant time and since gods know and fear this spell, they will make sure you are unable to actually finish that spell."
Drace then asks "Are there any spells that can boost my fighting ability in the Lost theorem?" Lucas answers "If you start to focus specifically to cultivate the bones that make you, then you can absolutely become stronger with it. I can teach you some tricks about it when we have combat training." Drace says "I… appreciate that."
Then Sonya comes and says "Teach me that too." which surprises Drace who then asks "Why are you in magic class?" Sonya says "I might learn something interesting. After all, it is our teach Lucas. And look, I did learn something useful." Lucas then says "It is good to learn about the field that you may oppose some day."
There were some other minor questions asked from Lucas, but over all, the class ended there.