The Old Necromancer's Undying Resentment
-----
A cloaked man whose only body part that could be seen were his skeletal hands, long white beard, and sharp red eyes below his black cloak looked into the army of Undead he led. A bit over fifty of his Undead were quickly caught in a pitfall trap of twenty meters deep, many of them were trapped there due to being pierced by the spikes in there, while the other half was slowly attempting to crawl back, although not managing to do an excellent work as they fell back constantly.
The man had walked outside of his dungeon the moment he left the giant Hydra Undead to deal with the pesky children that invaded his domain. He had already decided this long ago, but their invasion motivated him to do what he had been planning for years, accumulating materials to make his Undead army of almost five hundred. The ones he had left with the kids were merely "failures" or weaker undead he didn't seem to care as much, even the Hydra was merely an experiment he made which he abandoned later.