Ed: DMing; Paul: Zoozeki (high elf wizard 9); Scott: Smudge (shadar-kai rogue 7 / barbarian 2) and Martin (dwarf cleric 9); Dane: Tudo (dwarf cleric 9).
This was a short weeknight session, resuming in the undersea/under-volcano dragon lair.
We learn that the child dragon's name is Telemachus (which Dane heard as "Lemon Cakes") and the mother dragon we previously killed was named Penelope.
The party stands outside the hot metal door with the crank. Zoozeki had casts clairvoyance, and sees two hooded figures and a blonde man on the other side of the door. And a giant pile of treasure. Zoozeki casts arcane lock on the hot door with the crank.
Not wanting to fight a dragon and two mind flayers without a plan, we go back to the rat/brontosaurus room. We discuss sending a familiar or an arcane eye through the pneumatic tube, but we wait and decide to explore through the door to the north first.
Tudo smells decaying flesh and ozone and hears a crackling noise as he opens the door. He sees some kind of prism floating in the air, an extradimensional hyperprism. Tudo knows something about the extradimensional hyperprism, and stuffs it in his pack. There are lots of human an apemen bones in the room. The bones show signs of having been gnawed on. There are two other doors in this room, one east and another north. We examine both doors.
Zoozeki uses message to tell the bound guy that rescue is at hand. He's an imperial surveyor who was kidnapped when he was sent to survey the tombs of the ancient slug men emperors. He says the statue is just a statue. He says the horsemen may be undead and he doesn't know what will activate them.
Dane casts zone of truth on him. He gives the same answers. He also says he's seen two squishy guys (mind flayers) and a blonde guy. And a red-headed woman who left a week ago. He says his name is Martus and the surveyors guild will pay for rescue. He says there must be at least one other exit since this captors come and go from the southeast(?).
We kick in the door.
We don't see any other exits, but Smudge rolls a 24 perception check and detects a secret door in the southeast corner. He also detects that the northeast column is another pneumatic tube. There are eight more horsemen, for twelve in total.
Zoozeki uses passwall to take out most of the idolon statue, then Zoozeki casts fireball, incinerating six of the twelve horses and riders.
The apemen myrmidons attack and hit three of the horses.
Tudo takes a couple swings but misses.
Martin moon beams three of the riders and takes out two.
Zoozeki takes out another rider with fire bolt.
Bartus the surveyor insanely tries to jump onto one of the undead horses and fails, also running directly into Martin's moonbeam. He's unconscious.
Martin's moonbeam finished off three more horse and riders before the myrmidons mop up the rest.
The two idolons/statues (oh, there's a second one at the other end of the room) could still be a problem....