And where exactly did he obtain such a sword? Nothing in your character sheet implies he obtained it if it's that powerful, and if you just received in IC for some reason, that would not be acceptable. Royal Knight or not, can't just have people come across epic weapons for their own power fantasy. Having such a powerful weapon without even mentioning it is unacceptable. Even I included important equipment like weapons and armor, and they're only masterwork. not magic, not special materials, just well made.

Besides, a knight who needs to rely on magic swords is hardly a good knight. Instead of relying on the power of your sword to win battles, learn how to win battles with a sword.