I've been anticipating reviewing "Mystara" as perhaps the most difficult of the setting reviews.  Unlike most settings, it never really had a dedicated setting book. As the default setting for the "non-advanced" Classic D&D line, it grew from a couple of pages in the Expert Set published in 1981 up and ended as an AD&D in 1995. It is, perhaps moreso than any other setting, a product of organic development which grew and changed radically over the course of its different release cycles.  Unlike the ham-fisted attempts at development and expansion in other settings (Forgotten Realms with its Time of Troubles, Maztika and Kara-Tur getting tacked on to the edges with cheap glue and then destroyed for 4e altogether stand out), this somehow worked out well for Mystara. Perhaps because it is so non-premeditated and basically a collection of different authors having good ideas they wanted to throw at a setting and a setting that is very receptive to such tre