Insight
Adventurer
The first problem you have is that the DM should be limiting what Prestige Classes fit into his or her setting. Not every Prestige Class ever written are appropriate for every setting. Built into the very first set of Prestige Classes in the old 3.0 DMG was a section on the purpose of having Prestige Classes, and it was stated that not every Prestige Class is appropriate for every setting.
The real question should be, whenever you are thinking about Prestige Classes for your character, what does the DM allow? Your search should never have gotten to that point; the DM in question should have a list available that tells you which PrCs are allowed. Failing that, you should ask the DM about choices for Prestige Classes.
It amuses me that players think that all PrCs are automatically fair game, no matter the campaign setting. This has never been the case - just because it's published somewhere doesn't mean your DM has to allow it!
DMG said:Allowing PCs access to prestige classes is purely optional and always under the purview of the DM. Even though a few examples can be found below, prestige classes are idiosyncratic to each campaign, and DMs may choose to not allow them or to use them only for NPCs.
The real question should be, whenever you are thinking about Prestige Classes for your character, what does the DM allow? Your search should never have gotten to that point; the DM in question should have a list available that tells you which PrCs are allowed. Failing that, you should ask the DM about choices for Prestige Classes.
It amuses me that players think that all PrCs are automatically fair game, no matter the campaign setting. This has never been the case - just because it's published somewhere doesn't mean your DM has to allow it!