I have been working on a number of shape changing class ideas, and I keep running into overpowering issues...
I was thinking of something close to the Aberrant blood line. To make a more interesting shape changer, would it be considered overpowered if there were a sorcerer archetype that allowed the sorcerer the specific ability to combine spell effects from 2 polymorph spells?
For example, if the character wanted to be an undead dragon, he could mix Dragon Form I with Undead Anatomy I to become an undead dragon...
Using gestalt character rules as a guideline for the process, any time 2 spells listed the same bonus, like to strength, the caster would only benefit from the higher of the two (not the total of both)... But in cases where one spell offered something the other didn't, the ability would be added to the list.
Perhaps a meta-magic feat that would allow gestalt transmutation spells in such a manor? I do not think that the mixing of spells in this way should be limited to a number of times per day. I think the sorcerer should be able to mix any two polymorph type spells he knows as a single cast (again, using a spell slot equal to the highest level spell, plus 1 level for the use of the meta-magic feat). This feat could possibly be used for Wildshape as well as other forms of shape changing, but would have to be limited to spontaneous casting... Wizard rules wouldn't work so well because it would be difficult for them to know what kinds of polymorph spells they would want to mix.
If a feat is too much for such a concept, in terms of balance, what would you think would be needed to provide balance? Should this sorcerer be limited to transmutation spells only? Or perhaps just forbidden to use spells from a specific school?
