The Second Layer

All of Cain's improvements with the source attainment paths and the increased borders of his Spiritual Sea allowed him to touch upon a new level of Draconic Lightning essence by just flowing the energy out of his Inner World. 

Truthfully, Cain could've reached the 2nd layer of the Draconic Lightning Art long ago, ever since the mortal realms. 

But with so many complications that made a mess of his journey, Cain had no choice but to put it off in favor of other stronger cultivation arts. Now, after years of accumulation and many evolutions to his entire being,

Cain was ready to improve his Draconic Lightning Arts. 

Clenching his hand and releasing his soul energy, Cain smoothly controlled his Draconic Lightning to completely freeze up. No thunderous booms that can shatter the eardrums or crack small sections of space. The lightning nearly seemed peaceful.