Black Heart

Black Heart is a sword that is rumored to have been forged by the gods.

Appearance
Like its name suggests, both the blade and the handle of the sword are black, however the blade has reddish-pink undertones and a light pink gem is located in the hilt of the sword. The guard of the sword is a reddish-pink, and has two black spikes coming off of it, one on each side of the guard.

Forging
It is unknown who truly forged the blade, however when it was found, it came with an inscribed tablet, which read as follows:

"This sword was made by the GODS to kill the DEMONS from HELL"

This could infer that the sword was seen more as a religious object rather than a weapon of war, and may have been used in some form of ancient exorcism, though this is purely speculation.

Abilities
The Black Heart is noted to have various properties and abilities that are unnatural and cannot be currently explained by scientific methods. The sword seems to have the ability to transmute and transform living beings into other shapes, sizes, and forms. When it changes the body of the afflicted, the change is either neutral or harmful to the afflicted, never has a good effect been documented. When Oofian soldiers were struck with the weapon, all became temporarily paralyzed and temporarily blinded by the sword, however in some cases the sword caused several anomalous effects including but not limited to an advancement or decreasing in their biological and physical age, change of skin color, change of height, change of weight, or the manifestation several chronic diseases and deformities that caused subjects to expire within a few hours to a few days.

Apart from being able to change physical features such as physical age and skin tone, the Black Heart has been shown to be able to change the species of creatures attacked by it, the electrical charges of particles, and the body chemistry itself.

The Black Heart also seems to be acutely toxic to its victims, however the toxin is usually not fatal in the doses that are delivered by the sword, but on occasion the toxin can cause severe necrosis, internal bleeding, decreased blood thickness, blood in urine, blood in stool, coughing up blood, and bleeding from the mucus membranes at higher doses, or if the body chemistry of the afflicted makes it so that a lower dose is needed for the aforementioned severe side effects to manifest.