SephirothduLac |
Okay this is really more simple then it needs to be you are running a cleric of deceit. A charmer and trickster. Think what would a trickster do. To start with have him meet them under the guise of an ally. A helpless victim of the cleric. Someone to lull them into a false sense of security. Have two of his rogue minions also do this. During the main encounter with the villain have a fake duplicate on the throne while the party is readying for battle roll secret checks for steal attempts on the Gunslinger. Even using another's bluff to try and get him distracted. Eagle's splendor is great for that sort of them and any item to boost charisma is important. After the signal is given have the cleric or his minion toss the gun to the side away from him. Perception is important here hiding the truth until the gunslinger reaches for his trusty weapons only to find them gone. Then since he's the main draw and the rest of the party has been figured out target him and only him at the battles beginning even go so far as to have him be "knocked out" instead of killed because the Cleric wants him to appreciate what happens next. After that it's a cake walk. Without the heavy run rough shod on the others tactics they'll be in such disarray that when the big reveal happens that the cleric was the one they "rescued" it will make them realize just how well prepared he was. you can even stretch this out. Your cleric doesn't have to do a thing. He could have his minion die in his stead tricking the party only to go with them and sabotage them from the inside out. Tricksters are the best villains cause they are all about deceit.
You could also plant an arrow magnet on him and watch his face as his bullets go out and then back into him
Tee hee