I'm sorry, I'm not English but I esteem you a lot. To make sure that a session is not "Void" a prototyping It's enough? Or do they all serve?

It’s okay, don’t worry! You need to Prototype every single Sprite before entry- If you do not do this, the Battlefield will never evolve to its Final Stage, either making the Black and White Kings not develop enough, or at least making it impossible for the Genesis Frog to properly develop.