Jarvashqiine was a shamanistic Force religion that worshiped individuals who were able to use mystical powers—what the Jedi and Sith knew as the Force—and practiced shamanism; these beings were thus known as the Jarvashqiine shamans. During his quest to gain mastery over the dark side of the Force, Palpatine, in his alter ego as Dark Lord of the Sith Darth Sidious, studied the Jarvashqiine shamans and other Force groups, such as the Tyia, Krath, and Heresiarchs. Palpatine took everything that he learned from these various groups, most of which was crude and simplistic, and refined it, recording it in his Dark Side Compendium.