SO I'm am running a campaign and the players have just hit 15-17th and are abusing PaO and shapechange to a lesser extent. I already tried to neuter them at the start of the game, (no spells or spell like abilities) but they are still just totally out of hand. On character as a horned devil has a 62 ac and his already insanely good saves are basically in the not a 1 realm now. As of right now I'm tempted to just hit them with disjunction in the next boss fight, but is there perhaps a less over the top way to deal with these spells. In my future games I will just cut the entire polymorph line lesson learned I supose.