Qormusta Tengri is a god in a religion that has become influenced by and mingled with what?
Mongolian shamanism Mongolian shamanism, more broadly called the Mongolian folk religion, or occasionally Tengerism, refers to the animistic and shamanic ethnic religion that has been practiced in Mongolia and its surrounding areas (including Buryatia and Inner Mongolia) at least since the age of recorded history. The Mongolian endonym is Böö mörgöl (Бөө мөргөл). In the earliest known stages it was intricately tied to all other aspects of social life and to the tribal organization of Mongolian society. Along the way, it has become influenced by and mingled with Buddhism. During the socialist years of the twentieth century it was heavily repressed and has since made a comeback.
Zurvanism Zurvanism is an extinct heretical branch of Zoroastrianism in which the divinity Zurvan is a First Principle (primordial creator deity) who engendered equal-but-opposite twins, Ahura Mazda and Angra Mainyu. Zurvanism is also known as "Zurvanite Zoroastrianism", and may be contrasted with Mazdaism, which is the surviving form of Zoroastrianism and in which Ahura Mazda and Angra Mainyu are either themselves primordial (the traditional view), or the 19th/20th century developments in which Ahura Mazda is no longer the Creator of only the good, but also perceived as the origin of Angra Mainyu.