While leveling my characters up/doing the chocobo racing sidequest, my magics were leveling up at a really good pace. And something happened that for some reason hasn't happened to me before. I mastered one of my summons and it created a new one. Now I only thought that happened with attack magics, and all materia. So that got me thinking, when you get Knights of the Round will it do it with this? I mean you would think you could if one summon can do it then all would be able to right? So technically if you took enough time you could have all three characters with Knights of the Round in the final battle. Kinda makes a little easy.