Chiasmus

Overview

Chiasmus is the final mission of the Season of the Wish seasonal quest "Wishing All the Best" (step 52). It is a 1-3 player Scorn mission in the Observatory wing of Riven's Lair in the Dreaming City, where the Guardian must retrieve Riven's last egg. The activity lists 1600 power.

Encounters and mechanics

• Crawl through the Observatory wing (rightmost portal, through the Astral Cloister) while fighting Scorn.
• Activate three plates to open a portal out of a trapped room.
• Obtain the Ephemeral Virus from Mephitic Hosts and break Plaguewielder shields with it.
• Boss: Elikaa, the Pale Rot, a Scorn leader trying to force a wish from the embryo.

Rewards

Completing it ends the quest with Riven agreeing to grant the Guardian's wish. Exact item rewards weren't listed in the sources.