[@Crimmy] Yeah, but what if he describes something like complete depletion of magical energy or an induced extreme fatigue? I mean, it can be as complex as it can be with repurcussions, but the effects would still be massive. Given that what I'm going here is gradual progression in abilities and character. As of present, what's stopping your character from trying to make use of some complex statement? You can say that you won't do it, but its still a possibility and that possibility should exist for now.