Spurred Skeleton

After a bone breaks, it can heal with some extra material. Some necromancers exploit this to make spurred skeletons. They will repeatedly break and regrow the bone on a skeleton to form spurs on the bones. The spurs are most common on the arms of the skeleton.

Restraining Embrace. Necromancers like to use these servants to hold captives. Any struggle will cause more damage, so most will regret trying to break free. Should they choos to break free, the wounds sustained will slow them down enough for the rest of the necromancer's entourage to catch them.