Create a photo, or up to 6 photos, if you're full of superstitious fervor, with the title Secret Invocations in a Closed Room.
That's it -- there are no other rules, apart from the exhortation to be wild, free, daring, and clever. Also, cheeky never hurt anyone. Now go to it, and don't forget to come back and share your incantatory images.
Participating in this Utata project is simple! You need to do/have the following three things and then all you have to do is tag your photos utata:project=pt13 (read about other tagging options) and you're all set! Have fun!