Working principle

Elements
Magic is formed from six basic elements. Fire, air, water, earth, light, and death. Each element draws power from their respective element.

Fire magic is mostly chaotic and destruction based spells.

Water magic is usually manipulating and control spells.

Air magic harness the power of natural power of wind and weather.

Earth magic is the control of nature and growth.

Light magic involves healing and restoration.

Death magic controls the realm of the dead and decay.

Spell casting
To cast spells, mana is drawn from inside the body or gathered from the surrounding man if there is plenty of it around. Mana stones are also often used since they are a pure form of crystallized mana. (mana stones can either be on a staff or embedded into an armour or sword)

Magic is classed in 10 levels, each level is identified by a magic circle and its colour.

The power of the spells depends on the size and number of the circles, which is dependent on the caster's amount of magic power too. If a more powerful spell is required, mana stones are needed to help increase the amount of magic.

A circle equals a magic level and is around the size of a dinner plate.

Once all the circles have been completed, mana is expended through them and comes out as a spell.

Mana stones
The colour of a mana stone represents its element.

Only four types of stones are found naturally and those are fire, water, earth and air stones.

Fire type stones are mostly red to orange coloured.

Water stones are mostly blue.

Air stones are mostly translucent.

Earth type stones are either green, yellow or brownish in colour.

With each stone there are also differences in quality and clarity.

The stones are formed naturally in certain creatures with magic affinity to the elements. Like the wind wolves who have a natural affinity to wind.

Mana stone creatures
"The wind wolves have a natural affinity to wind, granting them a layer of moving air around their bodies, which make arrows and bolts harder to penetrate their bodies!"

"Some creatures, like dragons, can have their blood crystalize into what we called 'Bloodstones'. these 'bloodstones' contains a lot more magic power compared to a normal 'Manastone." Thorn, liked the way the hoomans named the stones of power as mana.

Creatures without a mana stone
"How about light and death magic?" Dr. Sharon asked again. "Are there no mana stones formed naturally for those? And those green skins why they don't have stones on them?"

"Light and death magic is extremely rare, the magical energies are unable to crystallize due to the day and night!" Thorn explained excitedly, these hoomans are more excited to learn compared to his apprentices and those students in mage school! "There is no full day of light or darkness, that allows a creature with affinity to either one to form the stone."

"So you meant that as long as a creature with affinity to light, say gets exposed to sunlight all the time will slowly have a light stone created?" Dr. Sharon clarified her thoughts with Thorn. "So if the creature gets sunlight for weeks or months constantly, they will create a light stone if they have an affinity to light magic? Correct?"

"Yes YES!" Thorn hopped in excitement, "But it is impossible to do that! There is only so much sunlight per day! When the sun goes down, the gathered magic is consumed over the night, thus there is no leftover magic to crystallize! And light magic dispels death magic, so it is the same for creatures of death affinity!"

Death magic is taboo by most if not all countries as they involved plenty of deaths to occur or live sacrifices."

Moving on!" Thorn excited rubbed his hands, loving the attention the class of hoomans is giving him. "Each person's body has a natural born storage of magic energy that is collected and stored. It gets replenish over time, but if you spend all the magic energy in your body, you get what we call 'Magic fatigue' which can cause extreme tiredness or in some cases, the person falls unconscious."

"Magic is classed in 10 levels, each level is identified by a magic circle and its color," He looks around the class, seeing everyone taking notes attentively. Oh, I love these students! Most of his previous years of teaching, the students mostly ignored him or sleeps in class!

"The power of the spells depends on the size of the circles, which is dependent on the caster's amount of magic power too. So if you want a more powerful spell, you need stones to help increase the amount of magic." He displays a level three spell, invoking three magic circles floating over his hand as he chanted.

The magic circles were the size of dinner plates and emitted a green glow, Thorn finished the spell and the whole room suddenly felt warm and cozy. Dr. Sharon immediately felt her tiredness disappear and strangely relaxed.

"This is a simple energy restorative spell. I did not spend much mana on it, it will only last a short time before disappearing." Thorn used the hooman word for power. "This spells creates an area of effect that anyone is inside is affected by its power. It helps restore stamina, but it cannot be used too often, as the body still requires rest to naturally recover. Too much Restoration, the user count break his own bones and suffer injuries still as they overtaxed their bodies."

"So this spell is just an illusion of the mind? Tricking it to think that their body is not exhausted?" Dr. Sharon asked again. "How about healing spells?"

"No, not an illusion, it just takes energy from the body!" Thorn explained. "Like it uses other energy from your body to give you stamina and strength!"

Wow? I think he means, stored energy like fats and stuff. Won't this be a great way to lose weight? If we could package this and sell on Earth, we will be rich! Dr. Sharon thought to herself. "How about the energies in the stone? Will they deplete?"

"Ahh, here's the interesting thing," Thorn grinned like a Cheshire cat. "The stones do run out of mana but it can slowly replenish the lost mana over time!"

"Wow is that some kind of solar powered magic casting wonder wand?" Someone in the back joked, causing some confusion to Thorn who did not really understand what solar means.