Before I go ahead and convert today's Whopperito fund into a book about how to spend my Vintage money wisely, does this book make mention of the identical builds of the Green JacoDrazi (WombaDrazi?) that have placed? I believe EE4 preceded even the first "printing", but I wanted to make sure the book was a good resource for me since Mark Hornung is always shouting in my ear to play his version of things.
I do talk about World Breaker a little bit, and adopt it (back) in the latest version of the deck presented in the book. Each card that I viewed as a reasonable tournament consideration is canvassed and discussed in Chapters 3 through 6.
I had tested World Breaker in my first versions of Eldrazi (when Lodestone was still legal as a 4-of even), but then abandon it, while still keeping Ulamog in the sideboard. My latest version adopts 1 World Breaker in the main deck, in favor of a Matter Reshaper, and still plays 1 Ulamog in the sideboard (Ulamog just deals with more random hate, albeit at a higher cost). As I mention in the book, playing any more than 1 or 2 World Breakers requires a slight reworking of the mana base to accommodate the green (most likely Brushland in 'Colorless' Eldrazi, and/or Horizon Canopy in WG Eldrazi decks).