How does shapeshifting spells work?

Teriudin

Mongoose
There are a few spells that allow shapeshifting, the Shape Shift spell in oriental magic, and the beast form spell from nature (among others)

How do these spells work precisely? Do they turn the sorcerer into the beast as stated in the Bestiary (except keeping mental attributes and feats) or do they give the sorcerer the form of the animal, (And associated physical attributes and abilities) but the sorcerer retains HD and BAB progression?

Say, if a level 4 sorcerer uses Beast Form to turn into a Bear, what would the stats be?

Thanks!
 
Back
Top