Veng the Manipulator is one of the most hideous enemies to mankind the world has ever known. His unique combination of Psionic abilities and magic items allow him to sneak into his victims dreams, and modify and direct the dreams, as well as “adjust memories”. Over the years, he has ‘programmed’ an insidious network of totally devoted followers. Using his natural ability of ‘Wisdom Drain’, he has created an army of willing slaves.
In the middle of an unimportant combat with some bandits a burst of wild magic transforms all of the PCs and their opponents in to random animals and monsters. They retain their intelligence (though not, of course, the ability of speech). They can either carry on the combat in their new forms, panic, or otherwise react how they see best. After about an hour, they return, unharmed, to their normal form.