Foundation

Foundations are the Metaphysical Backbone to a Universe, of which contains the very Laws and Concepts that govern the Cosmos.

One, with great enough power, can change the Foundation through Magic.

The Foundational Plane is effected by the Spiritual Plane, and the Material Plane is effected by the Foundational Plane. For the Collective Unconscious of Mankind can alter the Foundation, and the Foundation governs Physical Laws.

Collective Unconscious
Through Collective Belief, those with Souls can shape the World. If enough people believe strongly enough in something, the Foundation can be shifted in order to make it true.

In the early days of mankind, Gods and "Magic" did exist among men. Formed by collective thought. Such beings, born naught of Space but of Thought, are called Phantasies or Spectres.

Though as time passed humanity began to question the how behind such phenomena. Thus science was shaped by collective belief.

Counter Force
"Main Article: Counter Force"

Layers
Foundations are layered, each holding more and more abstract Laws and Concepts. Thus Universes can have entirely different Laws and Concepts, even having such a great divergence that they become completely incomprehensible by the inhabitants of another Universe.

There are infinite such layers. Rising to the Sprout, and descending to the Point.

Conceptual Constants
Despite how different Universes upon different Foundations can get, there are concepts that exist in all Universes without exception.

These are Conceptual Constants. These being Life, Death, Time, Space, Duality and Will.

While they may exist in all Universes, they manifest in different ways. To the point where they might not even be reconizable as being the Concept.