No, see, let me explain.Can we not? The sword by what you descibe is giving me suggsverse vibes.
Slay is one of the characters in my setting, who is standing against a force he quite literally cannot beat. He's a medieval warrior out on a vengeance path against a literal god. In order to accomplish this goal of killing the God, he's gifted a sword of Valerium Steel, Valerium being used by angelic beings to kill other angelic deities of which he has to fight. It just so happens that said deities can create omniverses and obliterate omniverses sometimes.
So, due to the fact he has to have some sort of fighting chance, he gets the Red Moonlight Blade, made of Valerium Steel.