Droom-avista is not a "little god" but a slumbering Outer God who can grant "wishes" in a manner similar to djinn or genies. He knows many secrets, but dislikes being awakened and has a cruel sense of humour, often twisting requests so they come out ill for the one asking. He manifests in a silent cloud of darkness and might be the same as Zuchequon, the Dark Silent One, or Nyogtha. He is noted for his destruction of Bel Yarnak.
This entity is the main antagonist in the eponymous "The Jest of Droom-Avesta" by Henry Kuttner.