>>150035548
It could be that he isn't too keen into flexing control over the cast in such a disrespectful way. It could also be that he was aware of that summon thing until a situation required it because he acts like it's something he is supposed to do but never found a good time for it.
They are his guests not his toys and sure they 'play' his games but -at least until Zooble became an outlier issue- they weren't under any pressure to be forced into doing them in the first place, they simply played along because at the end of the day it's a distraction from the boring routine of walking the grounds or the tent