Tengrists, so that we can have mammoths as a unit.
Fun Fact: In Tengriism, there is a kind of mythologized memory of the disappearance of the mammoths. It is claimed that when Kaia banished Erlig to the 9th layer of the underworld, after a heavenly war; he dragged the mammoths along with him, to have livestock down there, and placed a curse that makes them freeze any time they try to escape back to the surface.
The Turkic peoples of Siberia are the ones who have the most vibrant and colorful mythology. They continue to revere the mystical spirits of Tengrism and believe in their legends to this day. Dolgans living in the Arctic region of far northern Siberia, for example, came upon mammoth carcasses during their nomadic journeys. On Earth, these species haven’t melted in almost 10,000 years. The mammoths were taken to the underworld by Erlik, the lord of the underworld, according to the Dolgans, so that they could serve him. These mammoths have always been locked in the underworld, and those who attempted to return to the surface were frozen to death and buried as punishment. The bodies of the mammoths they have encountered from time to time will be half buried and half thrown away.