The Plane of Dreams

When a creature sleeps, the theory goes, its mind
engages in the same sort of work deities performed
when the world was new—an act of imaginative creation.
Without the raw material of the Elemental
Chaos to shape, though, these dreams exist only as
thought-stuff, ideas given only the shadow of substance.
To those few visitors who find their way to the
Plane of Dreams, though, the environment is as real
as any other world.

The Plane of Dreams

Nimmonah tondah