The Crystal Labyrinth

The DotMM Companion shoots up into outerspace with Level 16, the Crystal Labyrinth. This supplement fleshes out the chapter, offers advice for NPCs' tactics, and sets up the next level of Undermountain. It includes:

DM Notes. Notes including but not limited to spicing up the dungeon crawl with valuable roleplay with select NPCs.

Areas of Note. Notes, room descriptions, scenes, and scripts for the various areas of the dungeon.

Magic Item Descriptions. Save yourself the time of digging through the Dungeon Master's Guide to determine how the few magic items on this floor work. The appendix also lists the area the item is found.

Monster Stats. Statistics are provided for all unique NPCs used on this level.

- from the publisher's blurb