Now, you might be wondering how I or Mari even managed to obtain them, well, it's a convenient but good enough reason. My imagination. My imagination and skill was the only thing that limited me, so essentially, in this world of white, I had infinite stats, allowing me to pull off any feat imaginable.
Mari had decent imagination, but after Uranus, she was completely unable to follow my movements due to her lack of skill. She was not a dagger user at all, but even then, if she was, the gap between Uranus and Saturn was so wide that I doubt she would even have a chance at pulling Saturn off.
