Can't remeber if I've seen rules for this before, but what is the general take on using bluff to help disguise a spell vs. identifying it with spellcraft for counter-spelling purposes? anyone anyone?
Although this isn't very helpful because I can't remember the book it is in, there is a feat that allows you to do so, it might be disguise spell from Song and Silence but I doubt it. It's probably 3rd party material.
i know that some feat make the identification of spells by spellcraft more difficult (for example, Spell Thematics from Magic of Faerûn), but i haven't seen anything regarding using bluff to counter spellcraft...