Even though 'Fire of the Black Dragon' was just a name given by Jason to the move the origin flame had created, Solaris had once seen the flame of a true dragon.
This memory had been imprinted into Solaris' mana core, and since then, it had been trying hard to replicate the flame!
The flame itself was devastating enough to eradicate all opponents in front of it.
With that in mind, Jason supported his soulbond completely, transferring a large chunk of his mana to the center of Byakur where Solaris was manifesting.
Absorbing tremendous amounts of mana, Solaris didn't emerge in the shape of a miniature black dragon with golden eyes like usual.
Instead, the seemingly tiny origin flame morphed into a gigantic head of a true dragon that was entirely black, with golden eyes that caused the surrounding Oceanfolk to shiver in fright.
I have a discord-server, for questions, artworks, giveaways, and much more.
Link in my profile!