The Stormbreaker is an Alliance destroyer that served as part of the Valiance Expedition to Northrend during the war against the Lich King. One of many ships in the Alliance navy dispatched to Northrend during the campaign, the Stormbreaker was attached to the port of Valiance Keep in the Borean Tundra.
During the conflict, the destroyer made numerous trips between Valiance Keep and Alliance territories to the south, delivering supplies and reinforcements for the Northrend expedition. Unbeknownst to its captain, "Lefty" Lugsail, the Stormbreaker was also used by members of the Cult of the Damned to gain passage to Northrend in order to serve the Lich King. Though this had occurred on many Alliance ships, it was on board the Stormbreaker that it was first discovered by Alliance agents, after which Admiral Cantlebree, and eventually General Arlos, were informed.
- Fully stationary, the ship acts as a bridge between the two parts of Valiance Keep, which is split by a sea canal.
- A shrine belonging to the Cult of the Damned can be found in the Stormbreaker's lower levels.
- Patch 3.0.2 (2008-10-14): Added.