So it is inevitable that technology has indeed taken over the natural world, humans have become the dominant species when they diverged from their path with the aid of rudimentary tools and higher minds. So what happens to the rest of them? they go here, to the Evergreen Yonder. A place in between places where humans hold no ground, and never will due to the inherent superiority of nature that mimics technology that takes place on the normal world.
Access is easy as anyone can enter, yet 'something' will be taken away as a fee during that stay. It might be a power, an ability, or even a piece of lingering identity as in this realm there is no such thing as ownership. No singular or collective entities have grasp over the surrounding, yet the opposite holds true that the realm itself holds reigns over its inhabitants.
Communication is spoken with the 'All Tongue' a unified language that connects all living beings, a basic communication art that carries many functions. One such understood by observers as a form of 'magic', yet it needs a non-human mind to function or it will inevitably lead to short circuit and combustion. It is one that predates the true human language that is spoken prior to the abrahamic fall of the Babel tower, whereas that works only with humans this one transcends the boundaries of all living beings.
In a way it is much easier for children and those with 'dreams' to enter as it is Idealism, not cynicism that paves the way to a better world (Think Narnia). Most adults who have lost their imaginations will have hard time doing so, they may require additional aid or even an invitation to see what is taking place. Feral children and the insane can seemingly enter at will, some cases of missing persons end up as visitors to the Evergreen Yonder.
In the case of peril these creatures can be outgunned, it has been done in the past. They can be outwitted, it has been done in the past. Yet it cannot be outnumbered, in this regard ancient gods and outworlders have tried, and all have failed. For every one visitor there is a number that extends to every grain of sand spread upon a beach.
In this realm there is an ever shifting food chain, such intertwined with the webs of death and life. Such as the bridge between reincarnation, one that allows beings to take the place of others in a dynamic diversity. Fallen souls can retake their previous roles or choose to take the feet of others in rebirth, such as the characteristic of the Evergreen Yonder.
Magic in its terrestrial understanding gets a boost, yet foreign magic in a sense that they do not originate from this realm gets a penalty. It can be cast and expressed into the environment, yet something will be taxed out. As is the rule of the Green, the small percentage is taken in to be assimilated with the environment.
All matter of subversive faiths will fail, and all gods are treated equal (even so called omnipotents from a term that did not originally come from them). Power is measured in the lineage of anthropology, in a way that older gods have a higher standing that the new. Even they bend down to the rule of the realm.
There are also the 'Green Corridors' where from the inhabitants can freely observe humanity while taking a non interventionist stance. No animals are ever extinct, nor do they ever die but in that regard they merely 'move' on. The Green acts as their nexus of souls, a pseudo-afterlife that has sheltered lifeforms from the very first cells to the majestic beings that will hail at the ends of the cosmos. Time is perceived as a fractal non linear thing, so that there will be creatures from times unknown existing with ones pre-existing.
Human seers from afar will only see shadows, this extends to transcendent beings who originate as humans or those of humanoid origins. From the outside there is no 'color' to be seen, just a shifting arrangement of shapes that mesh together to create prophetic dreams. In the world of sleep the Evergreen Yonder serves as a window to infinite possibilities, anyone can tap into its insight.
It is a planar realm or a dimension that intersects the concept of the natural world between realities. It's very existence inverts the reality that mother nature is dying in a place of its own, one that decrees that nature still wins an immutable reality that can be taken as the one actuality where humans did not intervene. It stretches through eras, through the eyes of endless worlds.
As it is defined as a non-anthropocentric system which laughs at the belief that humans are the superior species there exists a phenomena that mimics the world, yet inverts it. The existence of 'super' flora and fauna to a way that humans have their new advent of heroes along with the new breed of villainy. Whereas nature holds an advantage over pre-industrial humans, such as the gap that has been claimed.
In Evergreen Yonder many entities from afar have come to take it as their own, yet reality fights back against the bends exerted from an outside force. It is an all encompassing force that seeps to all fundamental reaches interposed in this realm, where it is absolute. There are no gods as they all become the Green. Because the very Dimension is alive.
Newtonian laws need not apply, as science holds little to no value in such an ancestral place. The very center of nativity where all technologies will be annulled, those before and after the first spark of electricity. Intelligence and non instinctual reasoning will regress as basic skills will be forgotten. Humanity as far as this realm goes will be abandoned, yet in compensation visitors get animal forms which correlates with their personality. Most average humans are given primates, but there are cases of those appearing as wolves or lions.
When punishing agressors the Evergreen Sanction will turn them into a tree where they will benefit the rest while retaining consciousness, they can observe but that is it. Others can destroy as they like, but the next time it will be completely immune. Others can kill as they like, but the next time they will be stronger. Others may walk off (no sell), but difficulty level will only increase. The lands are overseen by Spriggan security which goes hand in hand with the ever changing forest which renders maps useless, in the event of a fight even the air itself that circulates inside your lungs will fight you.
As a basic characteristic of the Evergreen Yonder the location itself is flooding with life energy at its purest form, such is that can be absorbed at will but in return will assimilate the user at it's basic cost. In human understanding it is a phenomena that is comparable to the existence chi/reiki/qi, but in this form if used directly without a planar avatar (animal form) it is lethal. It ebbs as a circuit in the underlayer of the green.
The state of the location can oftentimes reflect the states inner self, which is why for children with idealism and optimism it presents as a fairy tale world with unlimited adventure. There are some cases of illegal loggers who are 'taken' and removed as broken mental cases, such as the fate of those who seek to damage the environment.
Huxley is ambassador from this realm to the human one, yet he also serves as an animal guide for those interested in entering to experience the perspective of their true ancestors. A place rooted with the beliefs of animism and totemism, where some can evolve at will.
The place that forever is unchanged by individuals, it changes them.
Like the belief that humans can reincarnate as animals some of the beings here can cross over to the human realm where they will be reborn as a human being, while retaining their instincts. Plants, animals and even minerals can gain sentience should they choose to deviate from the cycle. At the end, they all return.
The realm itself bestows weakness to alien influence, such as the concept of vulnerability to “natural, unprocessed materials,” meaning that sticks and stones will break your bones.
Break them, chop them down at will be beware that one piece will become a new Spriggan. If a being kills over 1000 Spriggan then they will gradually become more plant-like.