I'm slowly making a mod for the game, and I can say that this thing is already in the items. Unfortunately, you can only get it through the developer menu for now.
And this is a gorgeous Relic. Of course, its functionality is limited, but it gives a lot of interesting possibilities. You can make enemies rape and kill each other, you can remove inconvenient NPCs. It's not me, it's just an accident! Of course, any target after mind control will be hostile ... If you don't occupy it with something else.
This thing is well-designed, the game crashed only when I used it on a cage with slaves in the Noer market.
The Relic has well-designed limitations, for example, from people, it does not work on Greirat and on Big Mom, the latter even aggroes.
In general, I would like to see this cool thing in the game, which would make the Priestess really cool and creepy.