He explained to them what had happened with Elizaveta, how he had learned to control the demon...how they both wanted the same thing...to protect Ravka....and Zoya, but he left that last part out for now.
"I think he will be helpful in the upcoming battles--but I wonder if he ca be made stronger---if you, Aleksander, can lend me--it--some of your darkness to help fuel it. I make be it's master, but you are it's father."