He had the upper hand in the fight when suddenly, an attack from the Red Dragon Emperor pierced through his core as the White Dragon Emperor restrained him. That was a surprise attack for the Shadow Dragon and he went on a rampage after that and killed both of them.
Then he realised something. Both the Welsh Dragon and Vanishing Dragon are strong together and when working together, they even managed to damage him. Though he didn't give much thought to it, he felt the combined power of them both.
"I should go back a few millennia to tell you that story. It was a few centuries after the Great War and when the world was started to recover from the bloodiest war in history. Skiadrum, the Abyss Dragon, The Black Dragon Emperor, The Shadow Dragon, was fighting that generation's White and Red Dragon Emperor's.
He had the upper hand in the fight when suddenly, an attack from the Red Dragon Emperor pierced through his core as the White Dragon Emperor restrained him. That was a surprise attack for the Shadow Dragon and he went on a rampage after that and killed both of them.
Then he realised something. Both the Welsh Dragon and Vanishing Dragon are strong together and when working together, they even managed to damage him. Though he didn't give much thought to it, he felt the combined power of them both.
Not being in their Dragon form helped things for the 2 heavenly Dragons in their match with the Abyss Dragon. Skiadrum started losing his power. He started investigating on this anomaly and found that his broken core is the reason for his power loss.
Skiadrum came to me with a plan. He trusted me as we know each other. He gave me this" said Azazel. An image of a broken small ball was seen in the image.
"A black ball?" Asked Sirzechs but Michael knew what it was.
"No. It is not just a black ball, it is the core of the Shadow Dragon" said Michael to which Azazel nodded in agreement.
A core is a part of the soul where all the power of the ego and soul is stored. All the Sacred Gears also have their connection with their holders written at this part.
For powerful creatures like Dragons, Core is everything and destruction of one's core leads to the Dragon losing all its power and only a husk remains in place of their former self. Sirzechs understood the power of cores and understood the gravity of the situation.
"Yes, it is his core. He explained to me how the situation came to be and what to do" said Azazel, giving a dramatic pause to build suspense. Neither Sirzechs nor Michael commented on his dramatic attitude.
"Skiadrum told me that his power is slowly withering away and that how it will be stored in this ball as he separated himself with it and asked me to do something to it so that the amassed power would not go out of control," continued Azazel.
"What! He asked you to do that?" Asked Sirzechs, surprised.
"What? Don't you have trust in me, Sirzechs?" Asked Azazel in a mock hurt tone which didn't fool anyone present.
"Yes. He put his trust in me and also, I didn't say he passed away, did I?" Asked Azazel.
"Though he is separated from his core, Skiadrum is one of the Heavenly Dragons powerful enough to give both Ddraig and Albion a run for their money. His remaining power sustained for quite some time. I tried all I could to repair the core. But alas! I couldn't" they both started listening more carefully as they knew this is the most important part.
"Just before his final breath, Skiadrum came to me, beaten and pale as a sheet. He explained how he is finally going to rest for good and asked me to make him a Sacred Gear so that he can keep both Red and White Dragon Emperors in check. He gave the remaining power with his ego into this core which I managed to preserve.
"I am leaving now, Azazel. I thank you for helping me and I promise to help you when you need my help through the host I'm going to choose when the right time comes. My only request to you is to make sure the core is stable before my host arrives. As you know how an unstable core can change any Dragon into a Chaos Dragon"
Were his last words before he vanished into the black orb in front of you" said Azazel, a sliver of emotion in the end as he saw Skiadrum as a friend.
"After that, I started throwing myself hard into my research and experimented with every type of power I could find my hands on"
"At last you added Holy Light Magic, the power given to you by God and got the one in front of us now," concluded Sirzechs and Azazel nodded with a smile and a thumbs up.
"Yes. I found the chaotic nature of the Shadow Dragon's magic to be very difficult to suppress for any other magic. When I added Holy Light Magic to it, the chaotic magic and the pure magic cancelled each other out without any sign of instability in them.