While using these monsters is clearly iconic for Eberron, the appropriateness of it is questionable, serving to mislead the players in a way that most would consider unfair.
Am I confused?
Or is this just confusing?
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Yeah, I was thinking that too. Also having three people betray them in the adventure is a little silly, especially at 1st lvl. The Changeling, the Wizard, and the Elf Ranger. Then the town is also apparently full of spies for the goverment or other organizations too. I'm gonna need the heimlich after choking on all this pulp.
Yeah, I was thinking that too. Also having three people betray them in the adventure is a little silly, especially at 1st lvl. The Changeling, the Wizard, and the Elf Ranger. Then the town is also apparently full of spies for the goverment or other organizations too. I'm gonna need the heimlich after choking on all this pulp.
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I don't see it as that confusing. Both the Dolgaunt and the Dolgrim are known to at times work for the Cult of the Dragon Below, which are the main "obvious" villans in this piece. If your players or their characters know about these two creatures, they should have a reasonable chance to remember this as well.
The addition of a changling, excuse me doppleganger
, spy is an interesting one to me for sure, then again I have used this type of thing before in my games so have some experience doing it. As to the third betrayal, Valthrun is something, that personally I believe you could leave out completely, especially since it is an "optional" encounter to begin with. If your players are not great fans of this type of thing then just play him as you would if we hadn't gotten the conversion. 
The addition of a changling, excuse me doppleganger
, spy is an interesting one to me for sure, then again I have used this type of thing before in my games so have some experience doing it. As to the third betrayal, Valthrun is something, that personally I believe you could leave out completely, especially since it is an "optional" encounter to begin with. If your players are not great fans of this type of thing then just play him as you would if we hadn't gotten the conversion. After reading the Eberron conversion of KotS, I'm confused by the use of Xoriat monsters to help free a Rakasha Overlord.
I'll spoiler too, but I don't see it as being that big a deal.
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In the case of dolgaunts and dolgrims, I'd point out that they aren't lterally "Xoriat monsters"; they are (or their ancestors were) native creatures of Eberron transformed by the daelkyr. While they are best known as servants of the daelkyr, they are also known as inhabitants of Khyber - and as such, it doesn't seem completely improbably to me that some who wander from the dominion of a daelkyr and too close to an overlord's prison could fall under its sway.