Evolution.
The ability for a living being to surpass their limits and provoke a whole change in both their bodies and souls.
Evolution is fairly common with monsters, in earlier stages and ranks of development, they evolve the most, and as they grow, they begin to evolve less and less.
This is because evolution requires a large quantity of power accumulated until it reaches the limit that the current body can take.
Of course, in early stages of development, monsters are able to evolve constantly because their bodies are still weak and their energy needs to be constantly expended.
When this happens, this amount of energy in the body is used to make the body forcefully adapt to this amount of power, evolving and ultimately making it stronger, additionally, most of this power is also used through the evolution, leaving the monsters that evolve often tired after doing so.
Of course, as they grow stronger after many evolutions, their bodies are capable of taking a lot of energy, and will evolve less and less as time goes, but it doesn't particularly mean that they're weak, if a monster begins to evolve less it means it is already incredible powerful, and when it finally evolves once more, the jump in power would be even more terrifying.
However, not only monsters can evolve, the races of people that possess special magical bloodlines can also evolve, in fact, every living being has the potential to evolve in this world, and through the cultivation of their mana cores, this process can be hastened.
Of course, the races of people will evolve less commonly than monsters as their bodies, as they grow naturally, generate large quantities of storage capacity and they can also practice several ways to strengthen their physique without having to necessarily evolve.
It is also said that the stronger their bloodlines are, the more likely they can evolve, even humans can evolve if they have the bloodline of Aesir within them, often developing larger elemental powers if they descend from certain ancient gods such as Thor, Odin, and more.
Elves possess the bloodline of the Vanir Gods, such as Freyr, Freyja, Skadi, Njord, and more.
Ice Giants, Fire Giants, and all the other variants possess the Bloodline of Ymir and might even have a stronger bloodline from the various children he had, if they descended directly from them.
And so on.
Of course, Dragons, can also evolve, and they possess strong bloodlines from the get-go, their potential is often unlocked when they evolve more, and can naturally acquire a variety of natural abilities outside of magic itself.
But even then… this one Dragon… it had evolved way more than anything everyone present had ever seen.
And these beings were ancient at that, they had fought dragons before, many, many times… they had seen them in their various forms and registered every single one of them in their bestiaries.
However… they had never found a dragon in this strange shape before, eight heads, height tails, six limbs, and two pair of wings, and hideous appearance, resembling a beast that could only be found deep within the nightmares of a child that had yet to see what real dragons looked like…
"This hideous form… he had really evolved into such a form naturally?
"There's no way…"
"Well, didn't Green just said he had Unique Skills?"
"But even then, do Unique Skills… can do so much?"
"Of course they can, Unique Skills are wondrous powers, you've already seen the many things they can do through my research… His Unique Skills are simply… very superior to most of the ones I possess… Whatever unique skills are helping him progress at this pace and even evolve into such a powerful form… he most likely has Special Grade Unique Skills…" said Green.
Green had developed a small chart with the quality and strength of Unique Skills, based in their utility and development potential, Unique Skills were classified in four ranks.
Low Grade, Medium Grade, High Grade, and Special Grade.
Special Grade were Unique Skills with near endless potential, and which usually offered great power from the very beginning, quickly making geniuses out of those that possess them.
"Special Grade Unique Skill user?! T-That's…!"
"So this monster that killed Black is certainly not normal at all!"
"The latest Unique Skill User at Special Grade was…"
"That elf princess, isn't she?"
Green squinted his eyes, being recalled of the one girl that had become a headache for him since she was a little girl made him have a strong feeling of frustration.
The one they were referring to be an infamous elf princess with a Unique Skill that made her incredibly dangerous, a girl that quite literally had endless mana.
And even with the Curse of Yggdrasil, she was still incredibly strong… a threat even for Immortals.
"The topic is not about her, stop making me recall that annoyance…" said Green.
"Anyways, what else do you know about the ice dragon?"
"Tell us anything you know!"
"I don't know much, you got the wrong idea about me, I am not the encyclopedia of every being I see with my eyes… My knowledge about him is limited, but what I know is that he possesses very high-leveled ice magic way above his own level of power, and even worse, an incredible regeneration ability, he was able to regenerate limbs in mere seconds, and even his internal organs could regenerate very fast…" said Green.
"H-He's like a Vampire?"
"Worse, he doesn't have their weaknesses… And his regeneration is actually faster than them, we have yet to gather evidence, but maybe he could even have his head cut off and regrow a new one… his powers were this advanced… Simply put. He has an immortal body," said Green.
"Incredible…"
"If we could get our hands in such a being!"
"What if we could acquire such a body for ourselves? That unique skill!"
"I had been thinking about that for a long time myself, you know? But I have not found any clues leading to an ice dragon until now…" said Green.
