Space.
Layers were just mirrored realities.
Hex wasn't taught this. He discovered it. The advantage of seeing the complete path ahead became apparent as Hex battled the Calamity.
The solutions to obstacles came almost intuitively.
The building blocks were the same across every layer: the Space elements.
'I bet the circle is refilled while I move through the layers.'
Every layer he moved through suffered cracks due to him forcing his way in. The cracks released the Space elements it was built from. His elemental circle absorbed the free elements passively.
Hex understood this rapidly.
Despite pondering all this, his eyes never left the creature. Nor was the creature waiting for him to understand everything. That would be stupid. And it wasn't. It was a Calamity for a reason.
Even through the layers, its intentions were clear. It was absorbing large amounts of elements and chaotic energy.
'It's preparing a powerful attack.'