This book is far more than its scenarios. These are excellent, with plenty of player discretion influencing the inevitable story outcomes. That sounds oxymoronic but is actually epic, however you choose to use that word.
Additionally there are mechanics for both constructing and running heroquests AND fast NPCs. This includes a useful recap of The Hero's Journey.
Finally there is thinking. Thinking about Glorantha, naturally, but also thinking about how we think about this thing we do. What's more it's presented in a very accessible and often invisible way within and around the main text.
Even if you never play a game in Sartar, your players never hear the names of Ernalda and Orlanth, this book will improve your game.
Buy it, loot it, use it.
[5 of 5 Stars!]