The spirit designs from the two major seraphic dao treasures from the Ancient Emperor landed one after another under Wu Yu's control. The delay between each hit was less than a breath of time. 

The attack from the Black Phoenix was just a test, a distraction for Prince Diablo. The real killer moves were hidden beneath. When it was shown, they were used with surprising effects! 

First, the Heaven Devouring Avatar exhausted all his strength to trigger the spirit designs within the Imperial Insignia. When the sword pointed to the sky, the roc dragon and tortoise dragon growled consistently, sending tremors through the Eternal Darkness! An energy sword soared through and exploded onto the walls of the Eternal Darkness. All of a sudden, white clouds rumbled, and within the clouds, numerous immortal palaces stood up high. 100,000 heavenly soldiers lined up in formation and immortal war drums started booming, creating an imposing scene! As for the Immortal Slayer Strike, it was forming within the clouds. All the immortal palaces in the clouds and the heavenly soldiers were gathered into the blade of the sword....