My next idea was a creature called Hive. It wasn't much, simply an eldritch abomination type critter sealed into a cave ages ago by Celestia. I didn't like the idea much, because it was a very two-dimensional character. It was evil for the sake of being evil, which I've always disliked. Why did Celestia seal it in a cave? How come it couldn't get out? How could I make it interesting? 