har har, Nifft
I thought that only the abilities that pointed to polymorph were changed to point to alternate form instead. But polymorph still stands on its own. That's how I play it, and it has never gotten too crazy. Just remember that Outsider is not on the list of acceptable types (which I forget again and again, to my players' delight).
And wrt the size question (that is: alter self allows one size category different, but what about polymorph?), I allow polymorph to alter your size by two categories. This keeps that gnome from turning into a hydra. I also allow forms from only the Monster Manual -- no other sources.
I thought that only the abilities that pointed to polymorph were changed to point to alternate form instead. But polymorph still stands on its own. That's how I play it, and it has never gotten too crazy. Just remember that Outsider is not on the list of acceptable types (which I forget again and again, to my players' delight).
And wrt the size question (that is: alter self allows one size category different, but what about polymorph?), I allow polymorph to alter your size by two categories. This keeps that gnome from turning into a hydra. I also allow forms from only the Monster Manual -- no other sources.