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Uldir, Halls of Control (pronounced "OOL-deer") is an upcoming raid in Battle for Azeroth, situated in Nazmir. It was a titan research and quarantine facility which houses something that could potentially wipe out all life on the planet. When the titans were conducting experiments on the Old Gods and dissecting them to try to understand them, they ended up creating the blood god . He was locked away within Uldir via three seals, but now only one seal remains.