<<You would have to have a common phrase to activate the magic
or some reason to discover the other form of the girl,
especially if she needs a henshin stick or equivalent.
Hmmm, maybe if Ranma thought it would cure him or give him
control of the curse. Actually that in itself might make an
interesting tale.>>
"Just say my name, and the power shall be yours."
"Umm . . . ok.  SHAZAM!"
*Poof*
"Agh!"

And, in a universe far away, Mary Batson found herself much shorter than she
should be, and in very odd clothing.  Well . . . odder.

-Murmur the Fallen