I like the idea that it's all a set up to make the guy think he's cursed.
But... going to the truename thing. Your name, spoken from your own lips... well that would give any particularly powerful magical being a great deal of control over you.
I think I'd flip through the monster manual and find some epic level demon or devil and one night have that PC wake to find himself in the Abyss or some other pleasant location, in the center of a summoning circle, with some legendary demon/devil type standing before him (one that is so far out of the PCs league as to not be suicide to attack and the PC knows it).
The demon/devil offers the PC a simple deal - Perform one small favor for him on the mortal realm, or spend the rest of eternity in hell. Give the PC x days to find an artifact and deliver it to a group of loyal evil cultists. Failure, and the PC will be spending some quality time in the Demon's dungeon. Then whoosh... he's back to the campfire.
Any time you feel lazy or run out of ideas, have the demon summon the PC back for another side quest. Eventually everything that the PC helps the evil cultists with might set up an interesting adventure (how to stop that, while the Demon can summon one member of the party at-will). Or perhaps once the party gets into epic levels, they can venture to the Demon's domain to liberate the Ranger (steal the jar).
But... going to the truename thing. Your name, spoken from your own lips... well that would give any particularly powerful magical being a great deal of control over you.
I think I'd flip through the monster manual and find some epic level demon or devil and one night have that PC wake to find himself in the Abyss or some other pleasant location, in the center of a summoning circle, with some legendary demon/devil type standing before him (one that is so far out of the PCs league as to not be suicide to attack and the PC knows it).
The demon/devil offers the PC a simple deal - Perform one small favor for him on the mortal realm, or spend the rest of eternity in hell. Give the PC x days to find an artifact and deliver it to a group of loyal evil cultists. Failure, and the PC will be spending some quality time in the Demon's dungeon. Then whoosh... he's back to the campfire.
Any time you feel lazy or run out of ideas, have the demon summon the PC back for another side quest. Eventually everything that the PC helps the evil cultists with might set up an interesting adventure (how to stop that, while the Demon can summon one member of the party at-will). Or perhaps once the party gets into epic levels, they can venture to the Demon's domain to liberate the Ranger (steal the jar).