BTW, this amount of evil affects the perpetrators more than their targets. Once you start asking Satan for favors, it will bring nothing good down on you.
This reminds me of when the Muslims held some anti-Trump rally and all the Liberals showed up. The organizers had the secular atheist anti-religion Liberals chanting in Arabic a declaration that their God is Allah. Essentially they all converted to Islam without even knowing it.
These Witches will likely have the crowd chanting in Latin for the same purpose. Only this time they will be pledging their souls to Satan. Again, without even knowing it.
This is not something to play around with. I would never be involved in anything like this.