Should I use persuasion or intimidation to stop someone suicidal...

Persuasion makes it more likely to stick, and you'll probably feel more guilt if intimidation fails, since you may have inadvertently contributed to the problem instead of helping. In the former case, if you don't genuinely care about them enough to personally and forcefully stop them and help them with their problems, though, then it's probably better to let things run their course. You're condemning them to more of whatever drove them to that point with no reprieve or chance of salvation otherwise.

Intimidation actually works in settings with necromancy and tangible souls and shit. "If you do this, I'll just raise you and punish your soul for being a fucking retard, capice?"

I really like necromancer vigilantes who fight for something resembling good.

Even a cleric could do this.

"If you jump and die, i'll just revive you and all the pain of dying will have been meaningless"

>be it in self harm (like jumping from a bridge)
Persuasion
>or by others (menacing a place or the local authorities)
Intimidation

I think people would be pissed if a cleric used a high level miracle to ressurect 'an hero'.

Actually(in D&D at least) the soul has to be willing to come back for a resurrection to be successful, precisely to prevent shit like this from happening.

They also learn your identity and alignment at the time before the resurrection, like caller ID.

Well if the threat works, he wouldn't need to.

what is your alignment?

Good, but I'm a fighter so I'm better at intimidation.

I was thinking of saying something to scare a NPC into not suiciding, since I didn't invest in persuasion and the charismatic character isn't on the scene.

"be certain you'll die, or else i'll make you really wish you were dead"