Quest:Mimiron's Sigil

Mimiron's Sigil and its Heroic mode equivalent are a portion of the third step in the Algalon the Observer attunement quest chain. Completing this quest requires the defeat of Mimiron in his Hard mode: Activate the timed self-destruct sequence before starting the encounter.

Objectives
Prospector Doren at the Ulduar Archivum wants you to obtain Mimiron's Sigil.

For more information on obtaining Mimiron's Sigil consult the Archivum Console.
 * Mimiron's Sigil

Description
Mimiron's a clever one. His entire abode is rigged with some sort of self-destruction mechanism.

Unfortunately yer gonna have to race against it if ye want to get his sigil. Check the Archivum Console for more details if ye need them.