Whoosh — Pop!
After feeling stretched as thin as a string to the moon, suddenly you all stand in the center of a dimly lit chamber.
Set into one wall a large iron pot hangs over a banked fire. Beakers bubble and fizz amongst a chaotically cluttered counter, and one wall holds shelves of books. It is obviously some sort of laboratory or alchemical workroom. A closed door appears to be the only egress.
Looking down, you find a runic pentagram carefully carved into the stone floor, and though you can all move around within the confines of the circle, moving beyond that invisible line seems impossible.
A small pile of hissing green slime shares your space, expanding slowly outward.
(Each encounter is built upon the bones of the previous encounter, yet each one is also self contained, and anyone may participate.)