Husk walkers are powerful creatures who come to the natural world and take control of the bodies of the deceased. They wear the deceased's skin as their own, and they can access that dead person's memories - all of them. A Wizard of Dead Magic does not possess the spark necessary to summon them. No, they are so powerful that only one Lord of the Dead has that power: Dr. Bones.
Dr. Bones is a very special (and by special, I mean deadly) Lord of the Dead. When it comes to most of the lords, their power comes in terms of their battle prowess or their control over their minion. But Dr. Bones does not possess minions of his own. Instead, magic is his power, and he wields it much more proficiently than any other Lord of the Dead.
You might be asking what makes a husk walker so powerful? Well, the short answer is that it is impossible to destroy one. When you add the fact that they have unbelievable strength and quickness, we have ourselves a problem.
Hopefully, Nikko can consult the fairies of light magic and identify a way for us to defeat them. If not, we may be in trouble.
Want to learn more about Balthazar, the husk walkers, or Dr. Bones? Then download The Box of Death, Book 2 of the Three Wizards Chronicles.