I don't know about implementing such enchantments, but my weapon is a sword that allows me to utilize my ki to create a flame dragon from it. And the gods have long enhanced metals to serve as restricting devices.

As for legends, the most famous from my world involve the Tenchi Kaigen Kyoumon, which were used in the creation of the universe.

[Oh look, fire. Homura laughs lightly.]

...You seem to be having some difficulty, there.