Athame

An Athame is a double edged ceremonial knife that witches often use to direct energies in their daily practices and rituals.

Warlocks generally use athames in their ambitions to kill witches in order to obtain their powers. Though demons like Belthazor also enjoyed killing witches with athames, he had several in his altar and was also able to summon them.

There's a unique type of athame, which serves to strip someone of their powers when killing the person, called a Power-Sucking Athame. It differs from normal athames as powers are stored and can be used when equipped with the athame, while normal ones just instantly transfer the power from the victim into the warlock. They can also be used to scry if the blade is smeared with the blood of the target. Athames can also be imbued with one's powers via blood, as seen in the case of Gadreel.