Cake Mage said:
I know its a little favoritism, but its only because I know if the samuiri dies, the party will fall apart. No party means no game.
Isn't this thread about pain? Killing a character is not painful. Torture the player and character. Start with the samurai. Have his lord call him back to his homeland for something. If he disobeys, make him ronin. Send ninja after him, poisoning his weapons, armor, etc. Steal his katana, later have it being sold at auction legally. Samurai should be lawful in alignment. Lawful people have to obey the law. This is a severe weakness.
Next in line is the cleric. Who is a cleric of Hoar (Assuran), correct? If so, Hoar is an easy god to mess with a character. Since Hoar is the god of revenge, give the cleric opportunities for revenge and plan to screw him over in the end.
The noble sounds like fun too. Does he have a character background? What is his family like? Have they pissed someone off who would want some revenge against him?
Just remember that you can get way more mileage out causing pain vs. killing a character. Play on thier weaknesses. For a lawful character, use the law against them. This is really important if the class they are taking needs to be a specific alignment, attempt to drive them out of that alignment prerequisite (without forcing them, no one likes that). Give them situations where it is easier or better to take the road that will change thier alignment, tempt them. That is your job.
With a couple of encounters like this (remember they do not have to be combat based), you might get them onto a new plot or something.
All in all, just remember not to take things too far, remember to have fun. Also try to make the players think you are not planning to hose them, but do it anyway. Eventually you will earn the reputation as a rat bastard GM.