"I am curious about that myself. We had more than a hundred necromancers work on that spell," he spoke, walking around the room. "Namely it was a Body Preservation spell. Namely those you place upon corpses to prevent them from decaying. Such a use on a living being, would have in essence stopped all of their bodily functions even breathing." "The King at the time, didn't know about it. It would have prevented the plague from however, jumping from one body to the other. We aren't however certain ourselves how we became...this - maybe somebody casted a Raise Dead spell instead," he continued. "A spell that can raise the dead - in essence. But it usually binds the raised to the caster. Since they are merely bones, and not living things. As you can see however, we retained our will and likely soul - keeping our will and binded to none."