Greatsword of Carnage

The Greatsword of Carnage was a powerful Profane Weapon wielded by Zariel. Formed from the blood of Yeenoghu, it burned with ravenous flames that craved further bloodshed and destruction. An immensely powerful weapon, it matched the chaotic nature of it's source, able to change forms at the will of the wielder. It could take the form of a greatsword, twin swords, a greatbow, or a lance. Zariel preferred the form of a greatsword, but would often use it in its twin form when she descended into the thick of battle.

As this weapon was formed from a piece of his essence, Yeenoghu was furious at its existence and would stop at nothing to claim it and destroy it. This was something Zariel used to her advantage in her many successful battles against the Lord of Carnage.

History
The Greatsword of Carnage was forged from the blood of Yeenoghu following his defeat at the hands of Zariel. To commemorate her triumph and replace her lost weapon of choice, Dawnbreaker, she commissioned the blood to be formed into a weapon she could wield against demonkind.

The weapon, once forged, responded to her fiery passion in kind, becoming a blade of living flame. So powerful was the heat of the flames that it could carve through and scorch the flesh of even the most powerful demons. Zariel took to the weapon, and wielded it thereafter in every one of her battles.

Abilities

 * Indestructability- As a Profane Weapon, the Greatsword of Carnage was immensely hard to damage, only capable of being destroyed by the origin of its blood. This also meant the blade was capable of cutting through nearly anything else, capable of destroying non-adamantine magical items.
 * Unquenchable Flames- So hot were the flames of this weapon, that they could harm any being, even those with immunity to normal fire. As such, the weapon ignored all forms of fire immunity and resistance when it struck the target, dealing massive damage to any unlucky foe it touched.
 * Unholy Growth- The flames of the weapon lusted for bloodshed, and grew in intensity as they devoured the blood that flowed from those the weapon wounded. As such, the weapon would only grow more powerful each time it was used in short succession, the flames flaring and growing hotter.
 * Transformation- The living flames of the blade could form themselves into other shapes at the will of the wielder, transforming into twin swords, a greatbow, or a lance if needed.