This is what will happen during the 'event', the physical world and the dream world will merge.

By this point you can all feel something coming, however almost none of you have a proper understanding of what is going to occur. We're going to get some gay-ass elite shitshow, probably an asteroid that NASA will hurl at the planet or something equally as uninspired. It will of course be a pale comparison to what actually occurs. The celestial cycle consists of a solar mechanism which will cause the Earth's magnetic field to flip. That's where the weird will start.

At the apex of each celestial cycle the veil between the realms thins to almost nothing. The dream world and the 'real' (physical) world become temporarily the same realm. Creatures become hyper adaptable as their thoughts are primarily concerned with survival, so they will very quickly change their form to better survive their environment. The normal rate of adaptation and organism-learning with then continue as normal.

For humans, this means that those who have trained and mastered their minds will be able to change their forms at will. Into whatever you can imagine, almost instantly and should you maintain it until the realms separate again, permanently. A word of caution there, monsters end up hunted down, that's why only a tiny handful remain, it's been 12,500 since this last happened. Most normies will undergo a general change they see everyone else undergoing, which usually isn't terribly altered.

The mechanism for this is as follows. The relevant energy spectrum for the dream world or the 'astral' is of higher frequencies than ours. These wavelengths are quicker and more energetic. The Earth's magnetic field repels energy of this spectrum naturally, cosmic rays are an example of this. When the field drops to a relatively small strength more of this energy can enter our environment, when the magnetic poles flip over this field drops to almost nothing. At this point, along with everything else that goes on during such an event, the majority of relevant energy our forms perceive becomes primarily astral, which is malleable by thought. Because the primary amount of our attention is focused on that spectrum of energy, and since it would at that time permeate our entire environment, this would allow for thought to almost instantly shape yourself and the world around you.

Animals tend to freak out and adapt to their surroundings in the most effective way, the way Nature does. Some people use it to turn into dragons or giants or whatever. Most people don't even notice it until sometime after the shock of experiencing and surviving the rest of the cataclysm that comes with it dies down.

This is the mechanism of 'evolution'. All organisms adapt to their environments at a steady rate determined by 'physical concentration' of consciousness. At times due to celestial level events this process of adapting is greatly speed up.

It's gunna be wild.