Sindragosa Sindragosa , formerly the prime - consort of Malygos , is a mighty frost wyrm who was raised by the Lich King himself at Sindragosa ' s Fall in Icecrown . She is the very same frost wyrm that the Lich King raised in the " Wrath of the Lich King " cinematic , as the same scene is played out after completing the quest . Background . " From the book set " Cinematic Art of Wrath of the Lich King " from Blizzcon ' 08 " Long before the Great Sundering , the five dragonflight s — red , blue , bronze , green , and black — were charged with watching over the budding world of Azeroth . Sindragosa was the beloved consort of the blue dragon Malygos , also called the Spell Weaver , guardian of all arcane magic . With the help of goblin servants , Neltharion created a powerful artifact called the Dragon Soul . He convinced his dragon brethren to empower the disk , claiming it would thwart the impending invasion of the demonic Burning Legion . However , Neltharion betrayed his dragon allies during the Legion ' s assault , provoking an apocalyptic battle in the skies over the Well of Eternity . Malygos and Sindragosa joined the blue dragons in surrounding the Earth Warder . They charged the black dragon , but Neltharion used the might of the Dragon Soul to strike out , decimating nearly all of the blue dragonflight . The blast hurled Sindragosa far across the land , deep into the frozen north . Blinded and near death , Sindragosa sought desperately to reach the Dragonblight — the place where dragons instinctively travel to die . No longer able to fly , Sindragosa plummeted to the cold earth in the region of Icecrown . The blue dragon gathered what remained of her energy and called out to Malygos for aid . Her only answer was the howling arctic wind as she struggled on , but the distance was far too great ; agonizingly she realized that her spirit would not find rest within the Dragonblight . Her life continued to fade away as her sanity deteriorated . In the midst of her delirium , Sindragosa ' s final thoughts turned to bitterness and hatred : hatred against the Legion , hatred against Neltharion , hatred even against Malygos . But most of all , hatred against the world of mortals . And in her dying moments . . . Sindragosa vowed revenge . In Wrath of the Lich King . Sindragosa is briefly seen in the Pit of Saron , the second 5 - man Icecrown instance , after the defeat of Scourgelord Tyrannus . While the leader of the army of liberated slaves ( Martin Victus for Alliance , Gorkun Ironskull for Horde ) commends the players for their bravery and their efforts to free them , Sindragosa flies up from the pit below and unleashes her fury , killing the leader and his army . The players are pulled back to the entrance tunnel by Jaina Proudmoore or Sylvanas Windrunner , saving them from a grisly death . She is slain in the innermost sanctus of Icecrown Citadel by adventurers led by Tirion Fordring and Darion Mograine who seek the death of Arthas Menethil , the Lich King . Sindragosa appears as a boss encounter in the Frostwing Halls inside Icecrown Citadel . She was one of the first two bosses to be announced , the other of course being the Lich King himself . In World of Warcraft : Legion . Sindragosa appears to be still bound to Frostmourne , as she can periodically be summoned using the Blades of the Fallen Prince . That places her under the command of the Deathlord of the Knights of the Ebon Blade . In Heroes of the Storm . She is summoned as one of Arthas ' s ultimate abilities , dealing damage with her frost breath in a line in front of her .