Your Language
EnglishCreatures with darkvision will ambush players in pitch-black caves, while flying creatures will use "flyby" attacks to avoid opportunity attacks.
You want the content. You may not have $25 right now. Here are legal (and often free or cheap) ways to access the material without resorting to PDFCoffee:
Keith Ammann’s work is not a massive corporate product like a Wizards of the Coast rulebook. It is a single author’s labor of love. Piracy hurts him directly. Moreover, the PDFCoffee version is —poor quality scans, missing errata, no hyperlinks, and malware risks.