Curse Someone

Cursing someone sounds like a fun idea. It's not as intrusive as possession, but more personal than metamorphosis. Plus, they are well aware that they wouldn't normally do what you curse upon them.

Who to curse is the best question, followed by how to curse them. The twins each would be interesting, since they both have an interesting way of being able to get their way a lot. Your mother would be fun to get back at for all those times she punished you, and you felt it unfair. Jessica would probably be the most fun to curse, since you're always getting each other in trouble. Then you think about how great it would be to see how your good friend Lilly would react if she fell in love with you.

So many things to do, but you don't want to do them all. You want to work at this slowly and see how well the results develop.