Sphera are collections of vita that are enclosed by a spherical shell made of some unknown material that is sustained by the vita within.

These represent one distinct reality. The state of the reality is tied to the state of the vita within the shell.

However it would not be accurate to describe sphera as “containing a universe”, instead it is more accurate to view it as a container that holds the entropy tied to some correlating reality somewhere in existence.

You cannot “enter” a sphera to travel to the reality it correlates to.

The time that passes in a sphere relative to the palace is relative, meaning 2 seconds in the palace could be 5 years of time in a sphera, or 0.5 seconds. The rate a sphera reacts at is random but never changes, although it is possible to “accelerate” reaction rates, but it could more accurately be compared to slowing down your brain to make it feel like things are happening faster.

Sphera have a simple life cycle. After genesis, the vita within the sphera reacts, which causes certain things to happen in the reality its connected to. Then after some time, could be short, could be a long time, the sphera will fizzle out and dissolve into spatial essence.