mysticism kabbalah - Where did the book Otzrot Hayyim come from?

I've seen the book Otzrot Hayyim recommended as the best first text to use when starting to learn the system of the Ari. When was this book published and where did it come from? References to Kitvei Ha-Ari in seforim usually cite Eitz Hayyim or Pri Eitz Hayyim. Wikipedia says that an additional set of books called the Shmoneh She'arim were published relatively recently, after previously circulating only in manuscript and only in Eretz Yisrael. But Otzrot Hayyim does not seem to be one of the works that made up the Shemoneh She'arim.