I would say its decent. It is mostly fluff about adventuring in the underdark from both the GM and players perspective. How to create plot hooks, adventures, dungeons, traps and villains. For DMs there is a great random dungeon builder in the back, plus advice for running "old school" dungeon crawl adventure for newer DMs. Probably not the most useful book for an experienced DM but good enough for everyone else. (snip)
Overall it's a bittersweet final note to 4e for me, as I really feel if books like this and some of the others released in the last year (Feywild) had been part of the initial 4e rollout perhaps things might have turned out differently.![]()