I'm likely to be writing a review of the MHb for
www.3rdedition.org in the very near future, so here's a brief preview:
Chapter 1, Characters, pp 5-28, gives a selection of new classes, prestige classes and feats for the D&D RPG. Of particular note is the favoured soul, that takes the sorcerer paradigm and adapts it to the cleric divine spells and the warmage, a evocation super-specialist with the ability to wear light armour (progressing to medium armour at high levels). Also interesting are the Sudden Metamagic feats, a refined version of something presented as a house rule by Andy Collins. All in all, this chapter presents a lot of things that are great for my D&D game.
Chapter 2, Magic, pp 29-44, gives a number of new spells and magic items. It also introduces the "swift" spell, such as Swift Invisibility: a 2nd level Bard and Assasin spell that is cast as a Quickened spell, though it only lasts for one round. Also interesting is the Weapon of Transmutation, a magic +1 longsword that transmutes after it first strikes a creature so that it ignores that creature's Damage Reduction - no matter the type. More good material for the RPG here.
Chapter 3, Monsters, pp 45-72, has a number of new monsters. The most notable are the Aspects, lesser avatars of deities that have Challenge Ratings of about 10-12. The general rule here is "simple is good", and it's something I'm very happy to see. Instead of a plethora of special abilities, most of the monsters have only one or two: enough to distinguish them and make them interesting combatants without drowning the DM in details.
Chapter 4, Stat Cards, pp 73-82, explains the layout of the miniature stat cards and gives some sketchy guidelines for creating your own based on RPG characters and monsters. Not great, but servicable.
Chapter 5, Skirmish Rules, pp 83-126, give the expanded skirmish rules for the miniature games, including 27 basic scenarios, 9 advanced scenarios and the skirmish campaign rules (including magic item and commander advancement). This is very solid stuff if you like the skirmish game (as I do). (It also has rules for a wide variety of terrain types not yet seen).
Chapter 6, Mass Battle Rules, pp 127-162, allow you to use miniatures to fight battles with hundreds of figures on each side. Alas, it is in 1:1 scale (understandable but disappointing). The rules look fine, but I haven't yet played with them.
Chapter 7, Random Dungeons, pp 163-173, give you rules on using the stat cards to randomly populate dungeons (usually on-the-fly) and using interesting features to spice up dungeons. They're a lot better than I thought they would be. No rules on randomly generating dungeon maps exist, to my disappointment, but the rules do lend themselves to a fun game that can be played when players don't turn up and the regular session has to be cancelled. Their usefulness to the RPG is doubtful, though there'd be some things of use.
Terrain Templates take up pages 174-192; mostly reprints of Chainmail or Harbinger tiles. Colour Photocopier a must!
The book is best for those who want to play both the miniatures game and the RPG - for people like me, in fact. It's one of WotC's best releases this year from my point of view: a plethora of useful information.
However, if you only like the miniatures game or only like the RPG, it's likely to be a frustrating book.
I'll do a more in-depth review of the Minis game and the MHb in the next few days. Look for it then!
Cheers!