History of I — Eris Morn — Prolegomenon

Overview

I — Eris Morn — Prolegomenon is a triumph in Destiny 2 for the first entry of the Sororicide lore book. The entry is narrated by Eris Morn.

Lore entry

"Prolegomenon" is entry I of 12 in Sororicide. The other entries include ones by Savathûn and Xivu Arath. It was added with Season of the Witch in October 2023.

In the entry, Eris Morn reflects on the Deck of Whispers, a set of cards made from her power and the tithes of Guardians. The cards depict her, Savathûn and Xivu Arath, and she finds them unsettling because they reveal who the sisters have become. Her words, together with those of the two other sisters, form a Book of Sorrow that is delivered to the Hive as scripture.