The Nighthold: Delusions of Grandeur

Objectives
Collect the core of Trilliax and Grand Magistrix Elisande's Millennia Tome in the Nighthold on Normal difficulty or higher.
 * Trilliax Core
 * Millennia Tome

Description
Grand Magistrix Elisande and her cohorts have lost their minds - they truly believe that allying themselves with the Legion will end in anything but their own demise!

They are too far gone to save, I'm afraid, but they still have powerful items that we can use to help us infuse the Heart of Zin-Azshari with their power.

In your assault on the Nighthold, ensure you recover the mad construct Trilliax's power core, as well as the spellbook of the Grand Magistrix herself.

Good luck.

Rewards
You will receive:

Progress
I ask more of you than I wish, but there is no other way.

Completion
We've found a back entrance into the Nighthold that should provide some relief from the armies at the main gate.

"Some" being the key.