Shadow, or the Dark Element

Something in the makeup of this world created the three sorceries and sets its ideals apart. It is well known that shadow and darkness are forces of good, where light and brightness are evil.
It also has affected the biological makeup of everything on the planet. There is a literal, physical difference in this world that radically changed everything on it. Everything has within it remnants of something greater, or pieces of it. In the three intelligent races, there is enough of it to react to the world around them, and grant them the gifts of sorcery.
Essentially, it is the power from which the races gain their intelligence and their powers.

Manifestation

Their wills can be made manifest in a number of ways through their own strength. These are the three sorceries. They are Metamorphosis, the Elements, and Sensitivity.
It is also in the thought processes of those living. They evolved to prefer the dark; they can see in lower light and they do not rely on the sun as much. Their whole world revolves around the goodness of the dark. It protects them, it give them power and strength, it brought them to their Awakening. Their entire culture centres on the goodness of the shadow (just like Earth centres on the goodness of the light). They use their sorcery to honour it.
They can also, through this power, move between the Physical World and the Shadow World. This is not a cruel or an evil place. It is a place of quiet, and of little light. It is a strange place to be sure but it is a place of peace.

Localization

Ley lines or energy lines crisscross the land. They flow and their energy pools in places, creating centres of energy for one specific element. These are easily felt with some focus and often become gathering places. For the ɮudōju, whose sorcery is in large part subconscious, they often built regular towns in these places. In contrast, points of concentrated energy were purposefully sought out for the building of sorcerous temples. There are dozens of these points, large and small, across the land for each element.
The ley lines extend over the ocean somewhat, but with less strength. They are more spread out and do not overlap or interact much.

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The Shadow Realm lies alongside the Physical World. Those who train long enough can learn to move in and out of it, walking between worlds. Things are quite different there- but that does not mean they are bad. As said before, it is a quieter place, a darker place. Things do not really 'live' there just as those who come from the Physical World cannot stay there long. If they do, they begin to change into something that more closely resembles something wholly of shadow. Returning to the Physical World returns them to their original state.
All sorcery done there is heavily influenced by the use of shadow, but it is even stronger. It is done in a place of purity saturated with energy. It can bring healing, too, if one knows how.

Type

Natural