On a the haunted and cursed island of Poveglia, in Venice, Italy, a lone hooded figure stood in the middle of a sealed demons grave. Surround the figure was a protective seal and there was an incarceration charm on the demon seal.
As soon as the figure finished chanting, a ray of lightning crashed down and a purple pentagram with a single eye suddenly appeared. Almost immediately it tried to leave but the charm refused to let it free.
The figure spoke up.
"Penni Grahm, Demon of reality. I have a deal I think you'd be interested"
The demon turned to look at the figure.
"Speak then mortal. What is it you have in mind"
"Your liberty in exchange for the death of a certain family. Of course, after the deal is complete I would like nothing more to do with you, and ask that you leave me alone along with my family to live in peace." The figure said.
"Well aren't you overly cautious. Smart, but no need to worry. I am nothing like my brothers and I never break a deal. Let's shake on it" the purple pentagram said and they both shook on it, red flames sealing the deal.
The incarceration charm broke. Penni smirked with her eye. As soon as she completed this deal, she'd get back at all the people who had done her wrong. And who best to start than with her brothers and those pesky little brats, Azalee and Alexandé Baker-Pines.