Permanant planar binding

[LucyG92]

So, there is a character whose family was killed by a demon when they were a child. Their life's goal is to find the demon and enslave it as a sort of revenge (just killing it would be too merciful).

Does anyone have any suggestions as to how this would be done? Planar binding is temporary, so that wouldn't work.

I'm expecting this sort of thing to require a high level character and a lot of work to accomplish, of course (end of campaign goal, sort of thing).

[Bob Bob Bob]

Freeze it out of time, shove it in the earth, trap it in the cage, in a jar, in a gem, or also in a gem.

If you want to use it to actually do something, Binding (hedged prison) is really the only way. If you just want to keep it around to torment, Binding as a whole is good for that.

[Plausible Pseudonym]

Dominate Monster layered with Geas would be my pick.

[Necromancer Paladin]

Just before the spell would end; cast Dimensional Anchor at caster level 9 on it, create a magic circle against evil or chaos, create a calling diagram with magic circle, start casting planar binding. Part way through the last minute of casting, the demon will return to the abyss for less than a minute (not really much they can accomplish or communicate) giving them a tiny glimmer of freedom (one of the major focuses of chaotic creatures), but then it's suddenly taken away and they return to your service.