Currently I'm in a campaign where you can gestalt prestige classes, however the DM is finding its much more difficult to make this work nicely for a caster than it is a martial or hybrid class. (Note, you can't gestalt double classes like arcane archer).
Because of this, we're trying to make an edited version of Dragon Disciple for our sorcerer that isn't a dragon, but rather fits another bloodline. To do so, we're trying to find creatures we could replace 'Form of a Dragon' with that are equivalent in strength.
Is anyone familiar enough with the bestiary to know of something we can use?