When Eric realized that the zombie horde dispersed, he was a bit stunned and guffawed once again. He turned around and saw the pile of zombie corpses, forming a mountain, reaching up to his neck. It was quite wide and it was almost in the middle of the intersection. Watching, he frowned. It would certainly carry disease, especially the necrotic energy it was radiating.
Hence, he summoned a flame on his right palm, consuming all of his energy, and pushed his right arm forward, causing a ball of flame to fly and landed on the mountain of zombie corpses. The fire spread, devouring the necrotic energy and the zombie corpses.
To ensure the incineration would completely turn them all to dust, Eric activated his Imperial Mandate.
"Burn them to dust."