Spiritual Weapons.
Armaments that were born through extraordinary means in nature and had their very own consciousness together with the ability to get stronger just like any being all around the Realms!
The difference between a normal weapon forged from various ores or a Spiritual Weapon that was born through nature was akin to comparing a stick to a well-sharpened and honed katana; the contrast between the two was simply so vast that comparing the two was meaningless!
However, while Spiritual Weapons possessed great power and a fraction of consciousness where they had the ability to choose their own master, their numbers were rather low in all the Realms present.
Of course, this did not mean that there was only a handful of about a thousand or so, as the total number of Spiritual Weapons in existence easily reached the seven digits, but compared to the thousands of billions and trillions of weapons, their numbers paled greatly in comparison.