Following the Jailer encounter in the Sepulcher of the First Ones raid, a special cinematic plays. Spoilers ahead.
Jailer Strategy Guide In this ending cinematic, we see all of the covenant leaders chide the Jailer for the path he's taken (even Sire Denathrius), to which the Jailer replies «You preserve that which is doomed. A cosmos divided will not survive what is to come.» With those ending words, we see the veil over Icecrown Citadel close and the Jailer reduced to a lifeless robot.
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