While on the Moon, complete waves of Altars of Sorrow.
Also, defeat Nightmares in Sorrow's Harbor to gather Insight.
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"I have heralded great disasters. Some averted, and some we have been forced to suffer. But though I have done so in solitude, my warnings have never gone unheeded. We must listen, and reflect, and face what comes with open eyes." —Eris Morn