Sword of the Cherubim

Greatsword, Legendary (Requires Attunement)

“East of Eden was placed a Cherubim,
with a flaming revolving sword.”
-Genesis 3:24

The Sword of the Cherubim is a greatsword forged from the pure willpower of the Cherubim (AGttB) and intrinsically bound to its soul. A Cherub’s sword follows the mental commands of its creator without question, sword of the cherubim and most celestials among the heavenly host would see it as sacrilegious for a non-Cherub to attempt to attune to a Sword of the Cherubim. In most cases, attuning to such a weapon would be impossible anyway, but on rare occasions a Sword of the Cherubim might allow a creature to attune to it in order to complete the mission of its previous owner. Such occasions are nearly unheard of, and could only happen in the event that a Cherub falls and becomes a demon (leaving its sword behind), or else is killed in battle.

As a bonus action, you can speak the command word of the Sword of the Cherubim, causing it to burst into flame and hover in the air. When you first activate the sword, and then again as a bonus action on each of your turns, you can mentally command the sword to move up to 30 feet and attack a target within 5 feet of it. The sword uses your attack roll and adds your ability score modifier to damage rolls. The Sword of the Cherubim is a magic greatsword (2d6 slashing) that deals an additional 2d6 fire damage on a hit. The Sword of the Cherubim cannot move more than 60 feet away from you. If your movement would carry you outside of this range, the Sword of the Cherubim moves with you, hovering to stay within 60 feet of you. The sword continues to hover until you command it to return to your hand as a bonus action.

Azrael's Guide to the Apocalypse, printed page 177.