As much an FFVII fan as I am, if Sephiroth were to have his materia system and Squall to have his junction system and if items from their respective worlds could be used, Squall would be unstoppable. Any character from FFVIII would be unstoppable. If there is ever one thing I will say about FFVIII it is that I could make my characters ridiculously overpowered. And turning a mere playing card into 100 potions that cause you to become invincible? I mean, really, now...