Once I'm through with running my current campaign as DM, one of my players wants to take our group through his newest pet published campaign, Castle Whiterock. He's extremely strict on the playable content, and more than likely will want us to stick exclusively to the core ruleset (PHB and DMG). If there happens to be any exclusive fluff for the setting, he'll let us use that, too. I don't have any of that fluff on-hand, but if anybody else does and knows something useful, please post it here.
A few things to note: summoning and calling spells will be highly supressed. The dungeon has a mechanic that prevents summoned monsters with an alignment subtype from helping the party. It works thusly:
Any outsider with an alignment subtype (Chaotic, Evil, Good, or Lawful) affected, created, or called by a calling, summoning, or teleportation spell or effect within a few miles of Castle Whiterock is redirected to the Demonhold. Once there, the outsider is trapped and cannot leave by magical means, even if the spell or effect that conjured or called them in the first place expires.Therefore, it appears conjuration's usefulness will be limited compared to your usual campaign. In light of this fact, I'm considering 2 options: transmuter or diviner. But which to choose? I know transmutation is the grand-daddy of powerful magic, but something tells me that being able to know what's in store for the party before we get there will be incredibly useful in this dungeon. I may be wrong about that, so if anybody else is more knowledgeable on the matter, please let me know. Sure, I can always just take transmuter and memorize some divinations, but maybe there's something I'm missing so I didn't want to assume anything.
I will, more than likely, be a human since I'm limited to the PHB races. If my DM allows any additional books beyond the PHB and DMG, I'll be sure to update this thread. I have a very, very long time to get my plan ready, and I'm going to use it.