A rushed and spidery script marks a dog-eared page:

Guardian,

You have seen the intricacies of the Imbaru Engine firsthand. As I explained, it is a grand mechanism to generate tribute for Savathûn, as the Altars of Summoning are below. Cunning was her nature, as her worm compelled her to confuse. These tests will yield rewards at great risk. Triumph over them, if you are willing.

We have uncovered the Witch Queen's secrets. And we will do so again.

Truth in action,
Eris Morn