Breaking Bones

Kahn and his subordinates set up an ambush at the other end of the narrow tunnel while Oliver successfully led a group of 10 skeleton undeads by shooting arrows around their surroundings and attracting them using the noise.

The completely fleshless bodies of the skeletons clattered while walking as their bones hit each other and their zombie-like walk took a lot of time for them to reach the other end.

Kahn who watching this through Oliver's vision also noticed that there was a small amount of visible black smoke leaking out of these skeletons. And it was nothing else that the Dark Magic that was keeping these bodies intact and move them. 

But as soon as the skeletons entered the proximity.. They sensed a life form and suddenly, their hollow eyes glimmered with a fiery red glow. The unmotivated bodies of the walking dead now suddenly showed a hint of intelligence and gazed at the living being that was leaning against a wall.