As the title suggests, let's work some magic!
Though, more specifically right now I have two scenarios in mind
First: I am a witch trying to summon a demon, though due to lack of knowledge and focus on what type of demon I summon, I accidentally call forth an incubus (using original Latin translation of "to top" so gender does not matter here)
Second: I became lost near your home only to find out you are a vampire fully intent on draining trespassers, until I convince you of my usefulness long term, kind of Beauty and the Beast style, but you get to bite me.
I am happy to accept other suggestions, but these are top of my cravings list right now!