Verse barrier matter

Verse barrier matter is matter apparently arising from the existence of verse layers itself, that scales matter and energy going in and out of a verse so it doesn't become infinitely small or infinitely large.

There are some verses without this, ("empty boundaries"); if you enter them, you become omnipresent and see everything in the verse at once without your matter appearing visible to the inhabitants inside.

This matter cannot be taken out of the verse barrier, as it instantly transports any energy or matter it touches to its other side, acting as a portal instead of normal matter.

Verse Walls
If too much verse barrier matter builds up, it will not be able to teleport matter and energy through to the other side. It acts as a black hole, swallowing as much energy and matter as it can, before shattering into microscopic shards that form a new barrier, but thinner. It has been theorized that you could obtain verse barrier matter by shattering it, but it has been declared impossible after so many attempts.

The Enormous was surrounded in a verse wall, but it was thinned by repeatedly being shattered by the Awefians. It may still exist in some places.

Origin
Verse barrier matter is made out of reality itself, and it arises from the fact that having verses inside of bigger verses is super chaotic (it's layering realities inside realities). All reality layers eventually (though it takes an impossibly long time) decay into a single reality, and verse barrier matter is the debris from the layers decaying. If a verse just started and hasn't had any decay yet, it has an empty boundary. Entering this would make you omnipresent and you won't be able to escape.

The verse layers with the most chaotic reality barriers (ones that used to be multiple layers of verses, but got merged into one, this is possibly what made the Enormous) have the fastest decay, until their reality barrier is normal again. This means that they develop thick walls of verse barrier matter, forming Verse Walls.