Frostbrood



The Frostbrood are elite frost wyrms raised from the bones of blue dragons at Sindragosa's Fall. They consist of whelps, drakes (vanquishers), and the mighty wyrms themselves.

Wrath of the Lich King opening cinematic
In the World of Warcraft: Wrath of the Lich King opening cinematic, Arthas raises the frost wyrm queen, Sindragosa, who then flies over the Scourge army.

Quests
During the quest An End To All Things... the Lich King provides a death knight with a Horn of the Frostbrood which summons a Frostbrood Vanquisher. It is used to help the death knight destroy the Scarlet soldiers and ballistae.

Stefan Vadu
Stefan Vadu is a powerful death knight affiliated with the Knights of the Ebon Blade. He is seen riding a Frostbrood Vanquisher named Persistence. The drake is apparently free from the will of the Lich King.