Sickle of Adamant

Weapon (sickle), legendary (requires attunement)

Gaea gave the sickle to her son, the Titan Cronus, so that he could sever the genitals of his father Uranus. Zeus would later use the sickle to fight the monster Typhon.

Hermes had used the sickle against Argus Panoptes. The last known use of the sickle was when Perseus borrowed it from Hermes, to sever the Gorgon Medusa’s head.

You gain a +3 bonus to attack and damage rolls made with this magic weapon. In addition, the weapon ignores resistance to slashing damage. When you attack a creature that has at least one head with this weapon and roll a 20 on the attack roll, that target takes an extra 4d6 slashing damage, lopping off a body part with the effect of such loss determined by the GM. Then roll another d20. If you roll a 20, you lop off one of the creature’s heads instead. The creature dies if it can’t survive without the lost head. A creature is immune to this effect if it is immune to slashing damage, doesn’t have or need a head, or the GM decides that the creature is too big for its head to be cut off with this weapon. Such a creature instead takes an extra 6d8 slashing damage from the hit.