Kicking Harun aside, Xerzan summoned his Devil Armament, coating his badly bruised body with the demonic armor. Senses, speed, strength, resilience. As soon as he donned that armor, Xerzan's battle-power rose exponentially. But if it only came with perks, why not use it till now?
The Devil Armament was proof that Xerzan's mastery of Devil Essence had reached the traditional peak. But without the matching Devil Heart, this armor would quickly make him spiral out of control. Three minutes was all it would take for him to turn into a barbarous beast. Even with the armor, unless he somehow destroyed Harun's hold over his erratic heart, Xerzan didn't believe that he could defeat the plague god in three minutes. And with the threat of 1.5 million mutants eying him from below, how could he afford to lose his sanity? But now, he couldn't care for such details.