Created by the Elven Cultist event, on whatever level they spawn on. 7 cultists will appear, each next to a monolith. Killing a cultist will start the event, with a 210-turn countdown. Every 30 turns, a cultist will kill themselves (chosen at random from the alive cultists), as a sacrifice to summon Shasshhiy'Kaish. You can let the remaining cultists sacrifice themselves, or you can kill them. At the end of the countdown, Shasshhiy'Kaish will be summoned next to the same monolith that the first-killed cultist was next to. For each cultist you kill, Shasshhiy'Kaish has her "bonus to all damage" reduced by 10% and her maximum life reduced by 1/14th.
If you kill Shasshhiy'Kaish at full power (i.e. if you only kill 1 cultist to start the event, and let the rest sacrifice themselves), you will earn the Shasshhiy'Kaish achievement.
- Always drops Crown of Burning Pain artifact.
- (5 * (7 - cultists killed) / 6) high quality items. (i.e. 5 if Shasshhiy'Kaish was at full power, less if you killed cultists before they could sacrifice themselves.)