Santa Claus. Battle of Mages (2016) on Netflix

Plot summary

Masha, a Moscow schoolgirl, keeps seeing winged monsters made of fire in her visions, and her mother worries about the classmates who bully her. In the center of the city she watches those creatures fight young people who call themselves magicians, and one of them pulls her from a chimera's attack. She is brought into a secret organization, where she finds out that Father Frost, or Santa Claus, is real. He leads magicians who control snow and ice, and they defend the Earth from dark forces.