Because of the restraints of using his power outside of the Celestial Realm, the strength of the wave of black energy was limited. Its range was also very limited, so before it could engulf the entire army, it had run out of juice and dissipated.
Over half of all the combatants on the battlefield had been wiped out by that one single attack. A much larger portion of the survivors were summons that were already infused with Unholy Energy, so they were better equipped to resist the death wave.
Leon only took a glance behind him before he was forced to turn his attention back to the giant God Incarnate before him. A giant black hammer manifested in the hand of the incarnate, burning with black flames. In the black flames, silhouettes of skulls floated about, making grotesque expressions.
