"No wonder, this shit blood made me kill Lyra. Ugh, I don't remember what happened yesterday."
He was not in the condition to think sane as he was about to collapse while thinking about it repeatedly. Zoravec had to keep himself calm since the outbursts of his energy and powers were quite random.
Devi had no idea what or how he was able to access it. But it appeared that partial rage was one emotion which could trigger his powers. However, what was the affinity to be able to conduct the energy was still a question. Devi claimed that he was a powerful vessel for her to drain energy but what made Zoravec worthy enough to be able to have such high affinity?
It also left the bigger question unanswered. How all the other vampires were unable to grasp his scent or blood? It was impossible for a vampire not being able to comprehend or feel other's presence around him. Supposedly if Zoravec was a peculiar one, which in actual he was then how could the vampires not smell or feel him?