The Demon Crucible is a Escha-only support item found only in Atelier Escha & Logy: Alchemists of the Dusk Sky. In Atelier Escha & Logy, the Demon Crucible is a support item that Escha can create at Alchemy LV. 42 once she obtains the recipe book, "Oath of Eden" from Marion before leaving to exploring the Unexplored Ruins near the end of the story. Despite its old and worn-out look, this powerful support item can be both useful and dangerous since it takes away a lot of Escha's HP with every use, but grants her multiple turns in a row in exchange if synthesized properly.