Clashing Energies

When Rift Energy and Void Energy collide with each other, they create Dark Matter and Dark Energy. They work as a failsafe in the case of an absence in the balance of the 2 energies (EG: if the concentration of Rift energy is slightly higher the Void energy, Dark Energy will come into place and partially block the spreading until they reach a balance again. The inverse is also true.) It's during these brief periods of instability that Flaws are born and expand.

Note: Locostral is balanced purely by Dark Energy. There are reactors deep in the planet’s crust that stabilise the entire universe. Nobody but Rift and the Elders know that.

Flaws:
Flaws are the result of a missing balance within the Rift and Void energies. Not much at all is known about them, and the only ones who are currently in the known of even their existence is limited to: Arceus, Rift, Death; MissingNo and Void.

They have the effect to alter and distort realities, creating things that would have normally been impossible. They are also the reason behind the instability of the realms, which leads them to their inevitable collapse.

Initially, the Flaws were discovered accidentally by Arceus. Since then, they’ve been studied and temporarily ‘patched’ by him (and his indefinite numbers of Unown), in the hope of a possible cure for this multiversal affliction. Recently though, Rift decided to join in the research, creating multiple ASEs (All Seeing Eyes) which would have worked together with the Unown for stabilizing and hopefully fixing Flaws permanently.

Note: as of now, a cure for the Flaws has still yet to be developed, it’s currently only possible to momentarily ‘patch’ it, but it’ll end up opening again in the future, stronger.