So how could i implement fiendish pact without selling my soul? What woulf the patron request? Would it seemingly request nothing, just as long as my character causes death and destruction?
Also does sold soul actually have any negative effects ingame?
I'm running a 5th edition game set in Golarion, the default setting of Pathfinder. There's a nation called Cheliax that serves Asmodeus, and my players were wondering why the hell anyone lives there, or would ever make a deal with a devil.
But form an in game perspective, it makes sense. The empress of Cheliax rose shortly after the god of civilization apparently died on the eve he was to return and usher in a golden age. People were frightened and history has shown a willingness to exchange freedom for security. A frickin portal to the abyss opened up, demons poured out and threatened to destroy the world. And who stands to guard humanity? Why the noble baatezu! That's right citizens - those bearded devils on the front line were once puny humans like yourself. They fight the Blood War in the planes and join forces with good and evil mortals alike who realize the prime material plane is where they keep their stuff, and want it to exist! How long will YOU sign on for, to keep reality from falling into the abyss. Forever? Great! Lets get you a nice life here on the prime and you'll come back as a spinagon when you die. That's a pretty sweet step up from being some near mindless lantern archon on mount celestia, you get to fly and shoot flaming spikes!
But say forever is a long tour of duty? Well, we have many packages available for those willing to engage in a lesser commitment. For 100 years of service in the afterlife (and hey, whats 100 years when your soul is eternal!) we can help get you the girl of your dreams, revenge on your enemies AND if you act now, a NEW CART! All this can be yours, if the price is right!
Devils take the long approach, and have enemies that are also chaotic and evil (or lawful evil even). They don't even need your soul (or at least for very long). Maybe you can arrange to get possesed by a soul from hell for a few hours each month. Maybe all it wants to do is gorge itself on fine food or engage in some rough trade with your body before it goes back to the pits, and you're just helping Hell fulfill another bargain with someone else. You wake up maybe bloated or sore, but hey, you didnt kill anyone, right? And your daughter really enjoyed that wedding you would have never been able to provide otherwise. The play Faust in my campaign is even secret propaganda put out by the Asmodean church to make it seem easier to slip out of infernal contracts. They pretend to crack down on it, but like to get people thinking that only some rube is stuck being a nupperbibo for a thousand years. And you're much too clever to fall prey to a reverse subprime soul mortgage right?
The tiefling warlock in my current game has a pact with Levistus, the lord of Stygia imprisoned in a block of ice. In exchange for power, she works against the forces of Asmodeus, something she'd pretty much do anyways. Her imp acts like a reverse Jiminy Cricket and is a prime source of comic relief in our game. Besides, its not stealing if they're a rich jerk and you want it more...