Yeah, little lore bit for my story. Luna can control gravity thanks to the lunar eclipse blade. It's a weapon of incredible power. There's also the solar eclipse blade which can harness the flames of creation. A weapon of equal power to the lunar eclipse blade. Some wielders of an eclipse blade...

Can obtain the power of a full eclipse. Basically combining the lunar and Solar eclipse blades together. Luna's one of the only people capable of it thanks to her unique connection of the lunar eclipse blade.