Vocah's scythe was a weapon of Vocah, a warrior from Hell, who was able to generate this scythe when he placed his hand behind his back. He was capable of generating more than one scythe, as Angel removed one from the Oracles' body after Vocah had slain them and used it to kill the demon at the end of the episode. This is also the weapon that Angel used to cut off Lindsey's hand when he threatened to burn the Shanshu scrolls.
Behind the scenes
The rubber (stunt) scythe can be seen during the fight sequence at the end of the episode when it hits the floor and is stepped on by Angel.