After briefly explaining what Arthur can do when he becomes a plant mage. I conjured a glass cup out of air and then conjured water on top of it. Cup was quickly filled with water and I drank it. After hydrating myself I said, "Now I will tell you about pros and cons of becoming a warrior! Listen carefully!"
"First of all let's define what a warrior is! Warrior is a mage that sacrificed ability to release mana from his body. Warriors wouldn't release mana from their bodies because it would be a waste for them. Warriors are the different side if the coin. They wouldn't release their mana but would instead increase the amount of mana circulated around their bodies." I stopped and started moving my hands and said, "For every movement we make we need to use mana. But because the mana vessel is so big, in our daily lives the amount that is circulated around our bodies is less than 1%. And now imagine! With just that one percent the human body would strengthen immensely. What would happen when you circulate all the mana inside your body and achieve 100%. That's the basics of the warrior path."
I stopped for few moments for Arthur to comprehend everything I said and then continued, "Idea behind warrior path is to create a strong body that could withstand any mages elemental attacks. But because it has so many advantages it also has many disadvantage. Because most of the mana inside your body is always used and needs replenishing. When a warrior comes into a place where mana density is too thin or absent, the warrior would die in less that 3 minutes. Warriors could still use mana around them to fight like mages but their attacks would be far weaker than the mages who release mana from their body. Also mages could use up mana in the surroundings and trap the warrior inside the place without mana."
"So this is the basic summarizations of the both ways. They both have their advantages and disadvantages. You can choose any you want!" I said to him.
Arthur thought for a minute and asked, "Which one is the fastest way?"
I looked at him and said, "Fastet way would be being a warrior. For getting stronger you don't need to increase your vessel size which may take decades. You just have to increase the control over how much you can circulate mana inside your body for the given vessel size. But remember you have to choose wisely."
I let the Arthur think and I myself also was preoccupied with some thoughts. Shaping an ideal king is quite hard. I have to take notice of what I would teach him. I closed my eyes and ventured inside my minds library. Because of the superpower of my previous self I remember everything that I've read. I searched around my memories and finally found it. The book by Niccolò Machiavelli named "The Prince".
The Prince is a 16th-century political treatise by the Italian diplomat and political theorist Niccolò Machiavelli from the old Earth. Long story short the Machiavelli in his book talks about what makes a great sovereign. I chose this book because even thought rough it clearly explained how to be a great ruler and I personally love the ideas of the book.
When I returned from my mind library I am saw a determined glint on Arthur's eyes and he said, "I've decided! I want to become a warrior like my father and kill the dragon using the method my father created."
I smiled and stood up.
............
At the same time in the Dragon Kingdom:
I was looking around the Uthers lab. I went towards his equipment and sadly said, "Uther my loyal subject! I'm truly sorry for what happened to your wife and heir. They were killed because of the misunderstanding and I'm here to ask for forgiveness. You helped me many times and I couldn't even protect your family. Don't worry I already killed the Wyverns that took your wife and child's life. I know this wouldn't bring them back but i truly hope you will forgive me." I took a deep breath and wanted to leave the lab. When I was leaving something caught my eyes. It was a parchment placed on his desk. I came close and took a look at it.
Parchment talked about a way to become stronger. The way that would let the weak human to have a body as strong as the Dragon. Looking at the parchment I remembered him. If I the creature who was born with greatest physical body in the world used this method. Can I become stronger than him?
I looked at the Uthers desk and said, "Uther you were truly loyal. Even after your death you still help me! For your great services you will forever be remembered!"
.......................................
A year has passed since the time I started to teach Arthur. He was getting stronger by the day. A year ago his vessel was a small vessel with circular shape. His vessel size did increase in size a little bit but the greatest achievement he had was in control of the flow of the mana inside his body.
Today as always we were trining with him and suddenly I heard a roar from afar. I looked back and saw a gigantic lizard with wings was flying towards us. The speed it was traveling in was immense and in just few minutes it arrived before the world tree and my library. It was my old buddy the Dragon King himself.