Well it seems like from what I have seen Polymorph is more a Keyword for a variety of things, soo... Turning into a shadow for example or growing leathery wings (so far for powers in PHB only seen them as Warlock).
Just to start off though, in the
MM, in the Glossary (which I adore). They have Polymorph keyword, with
Change Shape essentially, things like type and size is dependent on the creature's entry (monster power).
You can basically turn into whatever thing the power tells you too (in most it is your basic medium humanoid). If it is a specific person you have to roll Insight vs. Bluff (+20) if your trying to not be found out by someone that knows that person.
So yeah it seems to be very specific to the power and it is more simply a keyword, and change shape seems to be the most common (in the
MM).
I haven't read much of the
DMG yet, so dunno there.
And yet another word from our sponsors
