Complex sentence: Marius eventually has the task of keeping them, and it is while in his keeping that Akasha destroys Enkil as she no longer needs him, this proves that is Akasha who is the life of the vampires and not Enkil as previously thought.
Split into simpler sentences: Marius eventually has the task of keeping them, and it is while in his keeping that Akasha destroys Enkil as she no longer needs him. This proves that it is Akasha who is the life of the vampires and not Enkil as previously thought.