Lex's spirit sense spread out around the graveyard, over the abominations, and into the literal endless pile of corpses. His spirit sense traveled until it eventually reached the ground, which had hardened like one continuous piece of rock, and then went deeper.
It also rose into the air, through the cloud of abominations and above it, searching for the actual sky. His left eye, especially, was activated far beyond what it had been in a long time as he studied the laws governing every aspect of this graveyard.
He could see traces of what once was. He could see the decaying laws that usually accompanied a thriving populace and large nations. He could see how they had been eroded, over time, and eventually replaced by a dark desolation.
Protected by his army of dragonfire creatures, Lex completely changed his focus to his surroundings, gaining a thorough and nuanced understanding of the graveyard that was out of reach at a simple glance.