i bought both it and the age of mortals book, over AU and the rest, and don't regret my decision at all. When it comes down to it, if you're going to play Dragonlance, get it. If you aren't, well, its just a campaign book, like the FRCS, or AU. I didnt get AU cause its just a campaign book for diamond throne, and totally wouldnt work in dragonlance. The DLCS is basically the best dragonlance gaming book ever, with a comprehensive history and geographical and cosmological details, and is worth its weight in steel to the Dragonlance fan =)