Colenso watched helplessly as his whole squad volunteered but him, eyes shifting towards the ground. He would have like to have helped, but in such a enclosed space as they were scouting, magic such as his would do more harm that good. Intelligence outweighed his need to be with them, to make sure they were safe, and obedience overruled his worry about who they were going with as horrible it made him feel to admit. He gave a worried expression visibly as they walked forward away from him, and he had to bite his lip hard enough to make it leak blood to keep himself from stepping forward.
In his mind, he was begging them not to leave, but as with most parts of his inner workings, it was held under lock and key. One thing apparent though, as he looked to the pony whom was taking them with her, the pony whom would throw any amount of ponies at a problem to solve it, seeing as they already lost a squad, he hated her. The amount of contempt in his heart was enough to scorch the world that was already dying.
(Sorry, I wanted to post, but like explained here, there is not much Colenso could do at this point. Also why the post is so short)