And because of the sudden influx of so much dense and pure magical energy Black! Her master's manavain's were in all respect- utterly overloaded.
Besides the only reason Black's manavain's still hadn't cracked and haven't stopped working despite the energy overload is because of his unique status as incomplete and his identity as a progenitor.
Than again since Black was advancing towards completion from incompletion his body was also very adaptable in nature! Accepting any new changes regardless of there uniqueness during this process. Thus the further expansion of his manavain's because of this unique nature of his body preventing them from cracking and making them more adaptable to the sudden change.
It was something that would surely increase his control over his magical energy by many time over and would directly result in the increase of his battle prowess too.
