Planar rescue (results of violet effect of prismatic spray).

[cantsingmcgee]

The campaign I'm running is starting to get to fairly high levels. The party is now 13, and about to fight a wizard that will most likely open with PS. If, by chance, one of them gets sent to another plane, how would the pcs go about rescuing said pc?

I am not well versed in high level spells, so am not aware of all the potential options! The first hurtle being figuring out which plane said pc went to.

The only party casters are a druid and inquisitor (and technically a ranger)

[RumpinRufus]

(Greater) Scrying should work to figure out what plane his is on. Then use a scroll of Message through the scrying sensor to ask him about a prominent landmark he can see (preferably as hazard-free as possible.) Get a couple scrolls of Plane Shift, shift to said plane, and cast Find the Path on the landmark. Meet him there, Plane Shift back.

[Shin Bilirubin]

Sending and Scrying would help to find a person who's been transported to another plane. Then it's just a case of Plane Shifting to find them, and hope you get close.

[Infernal Contract Broker]

Well first they could dimensional anchor themselves preventing such an attack from succeeding from the get go.

There are other means of preventing such travel too if they wanted to use them, but such would tend towards scrolls of higher level spells. If they know they are facing a high level wizard they might decide the best defense is to wipe his initial offense and go anti-magic shell to start with.

Plane shift would be a 2 step solution since it only gets them within 500 miles of where they want when they come back.

However they could always just make a deal with me.

[Shin Bilirubin]

While I wouldn't recommend making a deal, the Broker does make a good point. Contact Other Plane could provide a lot of information regarding plane and location if asked correctly.

[Infernal Contract Broker]

Well a deal wouldn't have to be the "give me your soul!" type. After all I have Plane shift and contact other plane as is. So it would likely just require a week on the prime material with no other preoccupations during that time.

It will be rather easy -- you call me, we make the deal you banish me I hop a ride then bring your pal back. Of course getting him exactly where you want is going to be a bit more tedious, but if the players are smart enough to remember that part I suppose they deserve a cookie.

[Kayerloth]

First I would decide how much of a tangent I'm willing to throw into the ongoing campaign/story. As you said the first hurdle is deciding what plane they have been flung to. Then based on that I would decide where I might send them. And I would decide ahead of time where I would and would not send the PC(s).

Things to remember. Prismatic Spray (and its Plane Shift effect) allows both SR and a Will save. Stopping it from working in the first place is a good idea. The easiest is Dimensional Anchor but that isn't on the Inquisitor or Druid lists. Its also totally random and therefore easy enough to simply fudge the result assuming you don't make all your rolls in front of the party. Don't want the hassle they don't go anywhere and just hit them with something else on the PS list.

Next assuming you don't want a major divergence send them some where 'friendly' not someplace where the environment and creatures are likely hostile. And not in the middle of nowhere but where a quick scouting the shifted character can see a settlement where they might bargain for help (or serve as a major landmark for their companions to zero in on) or both.

Sending, Scrying and Greater Scrying all work (potentially) across planes.

I'm thinking Transport via Plants is supposed to work only on the same plane (along the lines of Greater Teleport) but strictly speaking it says the range is unlimited and only that it must be between the same sort of plant. So find the right plant and the Druid may be able to Transport either to or from the party or shifted character.

The shifted character now gains the Extraplanar subtype (almost all the time anyway). This means, for instance, he may be Banished, Dismissed or be subject to Holy Word (or its alignment base variants) and get sent voluntarily or otherwise back to his 'home' plane.

The more you are willing to go sandbox and off whatever story line you are currently in the more obstacles and barriers can be thrown up or add in to the encounter.