2nd Exodus

Dwarves, Elves, Elementals and a small Dragon (Ikira) bickering. We see Ikira and her compatriots, the Elementals leave. Then the Dwarves and Elves leave. Next, we see the twins, Darunjar and Javeck, are bickering and having a heated negotiation and leave with a hooded figure.  The twins, along with the hooded figure, walk for a while and then start walking into earth much like the spell Mould Earth. The earth fills in around them. The hooded figure stops at the dais (the same one in this cavern) and the Elementals step up behind. We see the hooded figure better now. Charcoal black skin with a smokey beard and sunken eyes (Duergar).  Darunjar and Javeck produce both produce gleaming rocks from within themselves; one with a Greenish tint and one with a Purplish tint. The hooded figure does something, the dais opens up exposing a beating heart, and the Elementals plunge their rocks into it. 

The world bucks and shudders and suddenly feels empty. We realize the heart's blood has becomes ichor while hearing screams. The Elementals get bigger as the heart gets blacker and blacker. The shuddering stops and the dais closes and seals. The hooded figure says, "Let our friend be hungry now".

We notice that the Elementals have become something sinister, Avatars of deviltry. We see them sacrifice their cities, their people, their souls. The Twins start cannibalizing their own. The living world is now a zombie.