Rupture Reagent
What the reagent does, where it comes from, and what it takes up on the esva.
reviewed 8 August 2026
What it is
The Rupture Reagent is a generic apparatus: one single reagent serves all 13 classes. It occupies the esva's apparatus slot and unlocks the ruptured form in combat. Only an Edge Case ruptures: in any other species the reagent finds no way in.
How I do it
Before you startBeing an Edge Case only an Edge Case ruptures; in any other species the reagent finds no way in.requiredA completed Cavern the reagent comes only from the Cavern; no other activity delivers it.requiredA free apparatus slot the esva needs a vacant apparatus slot to take the reagent.required
How to get it and how to put it to work:
- Close a Cavernthe Cavern is the reagent's single source.in gameIncursion Map → Cavern1 cavern per day, per person
- Slot the reagent into the esvaopen the esva and put the reagent in the apparatus slot; the slot takes one apparatus at a time. Only an Edge Case ruptures.in gameCollection → esva → apparatus
- Rupture in combatwith the reagent slotted into an Edge Case, the ruptured form becomes available during combat.
In development
What is missing: how many esvas can carry it at the same time.
What already holds: it is generic, comes only from the Cavern, occupies the apparatus slot and unlocks the ruptured form in combat.
What I get — and what it costs
What I get
Ruptured forman Edge Case with the reagent slotted can rupture during combat.the apparatus slot is taken: the esva cannot carry another apparatus at the same time.
What it costs
Every other esva stays outsideRupture belongs to the Edge Case alone. In any other species the reagent finds no way in.One slot, one apparatusthe reagent occupies the apparatus slot; any other apparatus comes off.Single sourceit does not drop from raid, does not come from Dungeon, does not come from Expedition. Cavern only.Generic, not per classthere is no per-class version: the same reagent serves all 13 classes.