the blade...

I have doubts that the blade of darkness is stronger than the Tyrant's Ultrablade, Muramasa, or Sword of creation

it would fell like a regular sword if hit by it, but it can pierce almost anything. however, the sword will not pierce the object if you are uing it for evil intentions and will, instead rebound and hit the user with as much power as possible.

Ah, it's a blade of good intentions

yep. gunslinger is here to protect the peace.

the main thing is that it can materialise out of nowhere into the users hand. the blade is linked with them.

i'm not intending for it to be overpowered

Good, Imma post picrews of the top 3 strongest non-craftible swords