No Prep Module: Fractured Citadel of the Amethyst Wyrm (Patreon)

https://www.kassoon.com/dnd/adventure/no-prep-module-fractured-citadel-of-the-amethyst-wyrm/ 

The PCs rush into the shifting chaos of the amethyst dragon's citadel, racing through a crumbling reality to find and stop the mad wyrm before he destroys the multiverse.

https://www.kassoon.com/dnd/adventure/no-prep-module-fractured-citadel-of-the-amethyst-wyrm/