User blog comment:KontonMan/Fanon Tournament!/@comment-27859235-20170317081946/@comment-27859235-20170318155317

Yeah, I get it :) Well, it's a good rule then, because creating new jutsu in midst of a battle like that would result in neither of characters dying xD Everyone would have some kind of super ultimate defense even Super Saiyan Goku couldn't think of xD