You are busy doing your chores for your wicked stepsisters, muttering to yourself about what you would do to them if the roles were reversed, and suddenly your fairy godmother appears.
You know she's a fairy godmother, because she has six arms. All fairy godmothers have six arms, don't they? They are very busy people, and they need six arms to get through all the work they have to do.
Your fairy godmother introduces herself as Erice and asks if you want to go to the ball. If you do, no problem. But you have chores to do? That's no problem either. She can do them for you. That's why fairy godmothers have six arms, after all.
You'll need a posh frock for the ball, of course. Erice arranges that with a wave of her magic wand. A coach? Don't be silly. Erice can teleport you to the ball. There's nothing like arriving in style to make a good first impression, and first impressions count.
And you'll want the handsome prince (or at least the eldest son of the local aristocrat) to fall in love with you, won't you? Don't worry about a thing. Erice will arrange everything.
Well, yes, he does already have a wife. And children. But you aren't going to let a little thing like that stop you, are you? Not when you've got a fairy godmother on your side.
The marilith Erceirutacimxi (Erice for short) likes to have fun. Disrupting lawful societies is her job as well as her hobby, of course, but there is no reason at all why she shouldn't go about it in an entertaining way. Running amok with six scimitars has its attractions, but why get everyone fighting you when they could be fighting one another? The fairy godmother routine is probably her favourite, although the three wishes scam runs it close.
All it takes is a lazy good-for-nothing bimbo with a grudge, and the Fifty Worlds are full of those. Tart her up, point her at the nearest young man whose social position gives him more responsibility than he is capable of handling, and wait for the fun to start.
[AD&D-Specific] Erceirutacimxi, marilith (as in Monster Manual), Hp 62.