Hello everyone!

When the Duergar chieftain asked me to attack the black raven monastary, he said he'll shower me with wealth and other things. I never did this because the parties I make are always good or neutral. What exactly is the reward for attacking the monks?

There is no "wealth and other things", only XP.

***** SPOILER *****
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The Duergar will turn on you anyway, no matter what you do.

Thanks for the info!

I think I might end up attacking the duergar fortress anyway. My half-orc barbarian is chaotic good and he doesn't have the stomach for slavers.