An undead skeleton that starts out small and fast, like a goblin. Holds "bone clubs" for weapons. Very low dps, a tiny fragile weakling (maybe the size of the witches skeletons). However, when troops around him die, he harvests their bones and grows bigger and more powerful, but also loses speed. Perhaps he could even be strategically paired with a witch who "feeds" him with her skeletons and sacrifices themselves. When he takes damage, the harvested bones fall off and he shrinks back down to tiny size before dying off completely. So he can grow and shrink variably throughout the battle depending on whether hes collecting bones or being damaged. In order for him to die, he must be shrunken down completely first. So his size and health go hand-in-hand. But his size and speed (or lack thereof) also go hand-in-hand.
The challenging part would be keeping him alive long enough during his "infant" stage to collect the bones he needs to grow. But at the same time, don't let him near too many dead bodies or he'll get too slow and sluggish to do much good. This would be a very unique "dynamic" troop that changes it's size, speed, dps, hitpoints etc as the battle goes on and he picks up or loses bones. As such, it would be tough to determine a "housing space" value. But SC can work out a fair, optimal value for that.
As I have no way of testing stats for balance, I'll leave it to SC to work out size, speed, dps, etc...
Starts off small and fast (weak, fast, low health)...
Attachment 122536
Grows to an optimal size/strength/speed (mid speed/strength/health)...
Attachment 122538
Grows past optimal level (extremely powerful and high health, but super slow)...
Attachment 122540
(couldn't find a huge, fat skeleton photo)

