[@Scio] When comparing to other abilities it is bit weaker since the user is pretty much defenseless themselves (when they can't do weapons anyways) and if you simply attack him there isn't much he can do especially if he hit his limit, each thing that would be called essentially puts mental strain on him, so he has to focus on the creature(s) to keep it around, it isn't like the things he calls stays permanently like the Creation Quirk, so he can't like create a massive zoo of creatures or anything, maybe extremely end game should he be able to improve that much he could create a great deal of creatures at once but he wont be able to do that anytime relative to the rp. That and things like goblins would be easily killed, Raptors bit harder just because being faster but still pretty easy to kill. It is just one of my favorite abilities, I am writing a list of ideas for alternative abilities as a precaution.