Zmei

From the White Wolf Wiki, the most complete White Wolf reference

Zmei are the great Wyrm-dragons found in Russia. They were original bound into slumber by the Silver Fangs. Some of them were roused during the modern era by Baba Yaga.

Each of the Zmei has slightly different powers, but they are all huge, ferocious, and extremely intelligent. Even a pack of elder Garou would have difficulty fighting one, let alone when they work together.