This scenario was interesting and had a huge amount of ground to cover, to the point where I felt like it could have been split into two scenarios quite easily.
I love that the first encounter gives the PCs a chance to test their powers before they get into the big combats. If you are running this encounter, be very good about pushing the horror aspect of this encounter, as it is one of the best moments I have seen for that.
The second encounter is either insanely deadly (basically every table but mine) or you fail to roll above a 10 the entire encounter and the behir gets a mythic spell to the face that effectively ends the encounter. This encounter does REQUIRE the party to use their abilities.
This brings me to one of my three problems with the scenario: The Chase. I really dislike the chase mechanics, but this one was the best one I have seen, and with the chase points, it gave it an element of being a rush, though the party should have no idea about the chase points, so it's really how you wish to handle it. I don't know how the party would have dealt with this fight, but I suspect it would have done a good job of burning some of their resources, which might have gotten them to rest. However, one of my party who had a great diplomacy score before being mythic spent a point to get a +20 to her diplomacy score and then rolled a 20, giving her over a 50 on her dip check, so despite being in combat, she talked them down and next thing the group knows they have new pathfinders.
The final combat could easily be vicious, if you run a group of murder hobos, but with lamplighter worthy pathfinders, it is a good fight that has some danger levels, but isn't likely to end them.
This brings me to my final two problems with the scenario: The puzzle and the Convocation of Sages.
I do not like the fact that the puzzle is so open for "random" elements. I feel like it would have been easier to plot if it was actually designed fully and could have been done in the space used, but it was at least very interesting (though having to tell one of my players that her character has to roll to know the spectrum was a bit odd, even if very appropriate).
The Convocation of Sages, such as it is, is a great encounter and had we had time to do so, we were going to do a merger style format for all the tables at our con that were running this scenario at the same time, but the convention doors were ready to close on us so we had to rush it a bit, however, I feel like there should be a chance to actually USE social skills here, rather than just talking through it. I'm glad that it requires the conversation and gives one of the few moments to RP, but I do think that there should have been ways to sway with die rolls rather than being forced to vote.
