We successfully fought off the mummies, but Shan got cursed. We went back to the riddle room to rest, where Thoredim cast Greater Restoration on Shan.
The next room turned out to be the library. Suddenly a ghost sprang up, announcing that she is tasked to protect wizard Diderius’ work. Told us who had ransacked the library, while seeming very upset. She told us that Yuan-Ti were deeper in the dungeon. She also shared with us that she - as a ghost - would be released if we returned books (on divination) back to the library. Next: The throne room. In it was a 12-foot humanoid, demanding sacrifices before we would pass. We put down scrolls and platinum, probably way too much for what was asked. In the next room, a dining hall, a group of Bearded Devils waited for us.
The devils were thoroughly uninterested at first, but were willing to follow Posmet’s commands as higher-ranking follower of Asmodeus. Down the next hallway, a chaotic fight with spectres and wraiths begins, in which Shan bites one, the Bearded Devils bitch-slap others with their beards. After successfully disposing of the enemies, we find a bedchamber in which there are seven silk robes, an amethyst ring, scrolls and finally two goblets that keep filling up with some gas.
The next room contained a dry pool in front of which seven dead cultists were lying on the ground, among them broken arrows. Posmet sent some of the devils to clear out the rubble between this room and the passage to the mushroom-room. One of the devils was sent back to pull the lever in that room, upon which the pool filled. At this point, we heard a voice in our heads: “Some things are not for mortal minds to know - look away from darkness!” We decided not to push our luck after all, and everybody did as told by the voice, except for Posmet, who was seriously conflicted and just barely looked away at the last moment.
The next room had in it a sarcophagus. As we approached, we heard the voice again, telling us that Varram, the dwarf, was taken by the Yuan-Ti, after which another door on the far end of the room opened. Behind it was a hallway full of Lizard People and Yuan-Ti which we had to kill. Afterwards, a short rest was in order.
Finally, we gave one book that we had found to the library ghost, which had her finally released into eternal death.
We continued down the hallway until we encountered a slimy bridge - this part looked like it was added afterwards by the Yuan-Ti. As we crossed the bridge carefully, Kaiya almost fell in twice, both times saved by Shan. We ventured ever deeper into the hallway, until we met even more Lizard People and Yuan-Ti. One of them cast suggestion on Thoredim, suggesting to him to “find the spy” in our group. Thoredim thus used his last available spell to cast Zone of Truth on Shan and Posmet.
As we were about to win the fight, the Lizard People retreated into a room that had in it a Yuan-Ti Abomination, a formidable enemy. Posmet cast Hunger of Hadar right into the room, while we blocked the only exit - to great effect!
Afterwards we kept looking around and found, besides some prison cells, a room with three statues, with plate armors arranged like an offering. When we entered the room though, hundreds of snakes slithered into the room out of nowhere and brought the statues to life as Helmed Horrors.
The final room had in it giant serpent statues that were sputtering green flames. After overcoming this last obstacle, at the end of the room, we found a green altar and on it… the Green Orb! In front of it, two Yuan-Ti Abominations and on the ground, Varram the White.