Complex sentence: When in a new effort to control Spawn Mammon restores his individuality to the K7 Leetha necroplasm suit, revealing that as a part of his centuries-long plan to create the perfect Hellspawn, he had forged an alliance with the suit.
Split into simpler sentences: When in a new effort to control Spawn, Mammon restores his individuality to the K7 Leetha necroplasm suit. This reveals that as a part of his centuries-long plan to create the perfect Hellspawn, he had forged an alliance with the suit.