Once the PCs enter the Undercity in “Dawn of the Overmind” they are met by and harassed by grammites – man-sized cockroaches. The original used reskinned hook horrors but I decided to use the roachlings for the standard grammites, spawn of akyishigal for the elites and Akyishigal for the queen grammite. These can all be found in Tome of Beasts by Kobold press. None of these were a real challenge for a party of level 19 PCs but they were suspicious how easy the fights were. And suspicion is OK by me 🙂