Pawns of Hypnos (a setting mashup)

Inspired by Paul Schaefer's recent comments regarding am mashup of Ravenloft, Warhammer and Call of Cthulhu's Dreamlands.

Setup:  The PCs are modern era human dreamers, relatively new to the Dreamlands, but acquainted with Dreamlands lore to some extent through outside sources.  It seems the Dreamlands of Earth have mutated since classical times (i.e. 1920s era Call of Cthulhu lore).  As it approaches time for the stars being right in the waking world, the Earth's Dreamlands have separated into loosely connected nightmare realms.  Each realm is given shape by the will of great old ones worshiped as Chaos Gods, or by powerful but decadent or delusional dreaming human sorcerers.  Life in these realms is nasty, brutish, short and typically a bit Dickensian.

As their mortal bodies lie in comatose slumber in the waking world, Hypnos has taken an wry and inscrutable interest in the PCs, shaping the bodies of some into elf or dwarf or other less savory fare. For his own amusement or perhaps some cryptic purpose these pawns find themselves drawn through the misty borders between realms attempting to survive and sometimes pursuing the behests of various elder gods and others.