The Seven Hallowed Swords

Valor, the First Sword
(One in Judeo-Christian numerology represents God)
When drawn, Valor blinds all enemies who see it, much like Excalibur. There are other powers hidden within the glow of this blade, but few have unlocked these secrets, and those who have have long since perished.

Darklight, the Second Sword
(Two in Judeo-Christian numerology represents division)
When drawn, Darklight first remains evenly divided, then reflects the nature of the soul of the wielder, then adjusts to serve the wielder best in combat.

Trinity, the Third Sword
(Three in Christian numerology represents the Trinity)
It is able to divide itself into three blades: the blade of Defense (which can hover before the wielder and deflect attacks), the blade of Smiting (which can deal larger amounts of damage when swung in righteous wrath), and the blade of Healing (made of pure positive energy, it heals the living and utterly destroys the dead).

Nature's Edge, the Fourth Sword
(Four in Judeo-Christian numerology represents Earth)
When the wielder commands it, Nature's Edge is able to take on aspects of one of the four traditional elements (earth, water, wind, fire). It must revert to a non-elemental state before taking on a new one, however.

Harmony, the Fifth Sword
(Five in Judeo-Christian numerology represents human perfection and unity)
Harmony gives its wielder minor telepathic abilities, allowing them mainly to settle disputes. Harmony will only land a strike on a party guilty of wrongdoing that the wielder telepathically relays to the sword, earning it the nickname Sword of Justice.

Chaos, the Sixth Sword
(Six in Judeo-Christian numerology represents discord and chaos)
Chaos was originally an evil blade, forged and added to the Hallowed Swords to taint them. The warden of the swords, the Kensai, was able to drive the evil out of it, leaving only pure elemental chaos behind. Chaos is an ever-shifting weapon, and can only be called a sword because that is the form it prefers. It will attempt to keep itself in the wielder's hands as long as possible, and will even attempt to make itself be drawn instead of other weapons.

Blade of Heaven, the Seventh Sword
(Seven in Judeo-Christian numerology represents divine perfection and heaven)
The Blade of Heaven is the most powerful of the Seven Hallowed Swords. However, this power comes with a price: the Blade of Heaven cannot kill. Any attempts to land a killing blow with it will always fail, the light surrounding the blade halting mere centimeters away from the intended target. For this trait, it is also known as the Blade of Mercy.