Just as Hal was preparing to counterattack against the wave of dark energy Valyr had sent to fight against his golden light, the latter had found a way to sneak up behind the former through the use of [Serpentine Sprint], his steps remaining silent all throughout.
Then, seeing that Hal was wholly focused on accumulating strength for another attack, Valyr took the opportunity to catch the young man unaware, taking in a deep breath before pooling all of his remaining mana into his mouth, a faint heat starting to emanate from him.
With Hal placing all of his focus on preparing his counterattack, the young man was able to take his sweet time into charging his attack to its fullest, allowing an orb of flames the size of his head to manifest before him as his mouth to swing wide open.