The Jest of Droom-Avista is a very short Cthulhu Mythos story by Henry Kuttner, first appearing in Weird Tales in August 1937.
'The Jest of Droom-Avista' by Henry Kuttner is a short, poetic story set in the alien city of Bel Yarnak. It tells of a metallic doom that spreads from a single point, transforming the city's glory and beauty into a cold, lifeless state. The story evokes a sense of melancholic beauty and the irreversible nature of change.