I just love how "guy has sex with his little sister" isn't enough as a premise anymore. They need to mix in other random stuff such as black magic into it to make things interesting.

In the name of the dark lord , Hear my plea and whim, spirits of the dead.
Let this unholy blessing come unto me, and thy powers will be mines.
For one reason dictated by fate – the one true desire of us all.
The dark powers to fap to some good porn :P