History of Catharsis

Overview

Catharsis is the concluding mission of the Season 17 (Season of the Haunted) Bound in Sorrow questline, on the Derelict Leviathan. The objective: return to the Leviathan and prepare one final ritual to prevent Emperor Calus from assuming control of the lunar Pyramid. 1-3 players; activity lists 1560 Light. Launched from the quest.

Encounters

Guardians, with allies Crow, Zavala, Caiatl and Eris Morn, storm Calus's ship against Cabal Loyalists and Scorn, plus nightmare manifestations of the Fanatic, Kethiks and Dominus Ghaul, ending with Calus, Herald of the Witness, as final boss.

Rewards

Story completion of the season arc. Note: one source says Season of the Haunted; this is Season 17.