I would presume that most people are familiar with the first edition. In case you are not: When Eidolon first appeared back in the day, it set a new standard for roleplaying supplements. To me, it is a classic – among the best products ever published by old ICE. This is a no brainer. It belongs in every gamemaster's bookshelf.

A few words about this edition: On first glimpse, it has lots of new color illustrations and a much bigger adventures section. The new art is gorgeous, many parts of the book seem to have been expanded and updated. So, even for previous owners the purchase is worthwhile.